I've been rooting my Droid phones almost since the day I got my first one several years ago. I liked the customizations available and the infinite possibilities with roms and features.
After recently having to get a new DX I decided to stay with stock, and honestly I'm pleasantly surprised and content with it. I get all the updates VZ sends out, don't have to worry about unrooting if I need to send it back for any reason. Sure the bloatware is alittle annoying but I just ignore it. I've been rooting for so long I honestly forgot what a stock DX looks like and now with GB it's much better than before with Froyo.
The battery life is just mindblowing. running CM7 I couldn't go a full 8 hours without having to charge up so I wouldn't run out in the evening after work. Now I can unplug at 7am when I get up and still have 60% left at 5pm when I leave work.
Anyways, coming from someone who loved to root phones, stock is a nice change and overall I'm pretty happy with it.