To be honest, don't put soft returns into your text just to eliminate hyphenation. Just the addition of this hard formatting will make life difficult when shifting text around or adding picture elements which will cause these line breaks to appear where they're least wanted.
It sounds like you have a long document. Adjusting what is known as the 'hyphenation and justification' options is the correct way to do it.
From InDesign Help:
Click in a paragraph or select the range of paragraphs you want to affect.
Choose Hyphenation in the Paragraph palette menu.
Select the Hyphenate option, if necessary.
Make changes to the following settings as needed:
For Words with at Least _ Letters, specify the minimum number of characters for hyphenated words.
For After First _ Letters and Before Last _ Letters, specify the minimum number of characters at the beginning or end of a word that can be broken by a hyphen. For example, by specifying 3 for these values, aromatic would be hyphenated as aro- matic instead of ar- omatic or aromat- ic.
For Hyphen Limit, specify the maximum number of hyphens that can appear on consecutive lines. Zero means unlimited hyphens.
For Hyphenation Zone, specify the amount of white space allowed at the end of a line of unjustified text before hyphenation begins. This option applies only when you're using the Single-line Composer with nonjustified text.
To alter the balance between better spacing and fewer hyphens, adjust the slider at the bottom of the dialog box.
To prevent capitalized words from being hyphenated, deselect Hyphenate Capitalized Words. Then click OK.
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If you want to produce superb typography from InDesign Help
You have a choice of composition engines to help you determine the visual "color" of your text. The single-line composer considers one line at a time, while the paragraph composer compares and adjusts multiple lines at once, producing superior typography.
Adjust hyphenation and justification controls to enhance the appearance of type. (See Controlling hyphenation and justification.)
Use optical margin alignment to control whether punctuation and edges of letters "hang" outside margins, thus making the edges of a text block appear more even. (See Specifying Optical Margin Alignment.)
To achieve precise spacing between type characters, you can choose among four kerning options, including optical kerning, which lets InDesign determine smooth spacing for adjacent characters, even for lines of type with mixed fonts and sizes. (See About kerning and tracking.)
InDesign supports the advanced layout capabilities of OpenType fonts, including swashes, discretionary ligatures, and other features that previously required switching to a different font. In addition, InDesign offers easy access to the alternate glyphs common in OpenType fonts. (See About OpenType fonts.)
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As far as flowing text into so it auotmatically flows into newly created pages, you need to set up master pages with the Master Text Frame option.
When you start a new document, you can select the Master Text Frame option so that an empty text frame is placed on the document's default master page. This frame has the column and margin attributes specified in the New Document dialog box.
Follow these guidelines for using text frames on master pages:
Set master text frames when you want each page in your document to contain a page-sized text frame into which you can flow or type your text.
If your document requires more variation, such as pages with different numbers of frames or frames of different lengths, leave the Master Text Frame option deselected.
Whether or not you select the Master Text Frame option, you can add text frames to a master page to act as placeholders. You can thread these empty placeholder frames together to establish a flow.
Flow text into master text frames using the same procedures you would use with frames created on document pages.
If you need to type text in a master text frame on a document page, hold down Ctrl+Shift (Windows) or Command+Shift (Mac OS) as you click the text frame on the document page. Then click in the frame using the Type tool and begin typing.
If you change the page margins, text frames adjust to the new margins only if the Enable Layout Adjustment option is selected. (See Adjusting layout objects automatically.)
Selecting the Master Text Frame option does not affect whether new pages are added when you autoflow text.
When you place text into a frame on a document page that is based on one of several threaded frames on a master page, the text flows into just the frame you click. That's because clicking the icon in the frame overrides only that frame. However, when you hold down Shift as you click in a frame based on a master page so that text is autoflowed, InDesign overrides all the threaded text frames, flowing text into each and creating new pages as needed.
