Telus as well. I don't think the stock keyboard has that option. Get Swiftkey, it is a far better keyboard and does have the option of having the spacebar simply insert a space instead of suggested spellings or words (under advanced options) . The predictions are far better as well.

 

I switched to Thumb Keyboard. I don't like auto-correct as well and this keyboard can be configured to only make suggestions. I also like Thumb Keyboard over SwiftKey because Thumb Keyboard does not add extra spaces here and there. Thumb Keyboard only adds spaces when I actually press the space bar. SwiftKey tends to keep adding spaces here and there like after punctuation causing me to have to delete those extra spaces.