Originally Posted by freejrs
but what will become of all my other sims if I get hooked on this?
Speaking from personal experience, iRacing has pretty much ruined every other sim for me. Going back to GTR2/PnG or rFactor they just feel so flat and lifeless by comparison. Actually that might be a bit harsh, they mostly still feel good, but I definitely notice what's lacking in them more now. Some mods that I used to drive just feel terrible to me now. I think it's down to the feedback you get with iRacing, you really notice when it's missing. Plus most other sims just feel sluggish with steering response now I'm used to iRacing. At first iRacing's steering response felt too sensitive to me, now it's the opposite.
And Mr Dent is right, it's not the be all and end all. It's really just another sim experience to have in your collection I suppose. They each offer something different.