Skyrim hasn't wrecked much for me, in fact i have an on going Morrowind playthrough which i continue each weekend. The Elder Scrolls series however has ruined most other RPG's for me... since i started with Morrowind back in 2003 there has been no other RPG series that really compare to the Elder Scrolls for me, except for Fallout 3 and New Vegas for obvious reasons.
I guess "ruined" is the wrong word to use, i just don't enjoy other RPG games as much as The Elder Scrolls series. I hope that this series continues long into the future. Although the streamlining must stop or i my opinion might change.
This, this, 1000 times this.
No RPG compares to Elder Scrolls, plain and simple, for me. I still play other RPG's, but I know not to expect the full experience that I get from an Elder Scrolls game.
The only thing I disagree with you on is the streamlining statement, I think that Skyrim is an improvement in virtually every area from previous games. There are really only 1 or 2 things that I can think of that past games did better, and they aren't even that serious for me.