You caught a bad case of gottahaveit, probably from spending time on this forum without wearing proper protection. Unfortunately, it's incurable.
Watch out for upgradeitus and L-coholoism here too. These diseases are also rampant here, highly contagious... and, sadly, incurable.
Take two EF lenses and call me in the morning. This only temporarily treats the symptoms, though... There is no cure for gottahaveit.
We should tell everyone your story out as a warning, maybe put some PSA ads together for bus benches, MTV and Teen magazine (all at taxpayer expense, of course), letting young people know that they really should have an expensive multi-coated "protective" filter on 24/7/365 to help avoid catching these diseases.
Seriously, you have a couple nice zooms, there's nothing wrong with wanting to shoot with primes some of the time, too. I use both the primes you are considering, along with a few others. I'd rather shoot with primes, but use some zooms too, out of necessity. The 28 is very compact and a nice walk around lens. The 85 is a great candid portrait lens.