I guess it's a very personal thing and it looks like most here are against it.
If it were me I might do it. I recently put my old Windows laptop out to pasture and bought an IMac. I've used widows all my life and enjoy the change. It's been pretty painless and I have no significant regrets. For my situation it is great and I'm actually a bit emarrassed how how much I'm enjoying the change.
Having said that I hope I never become a fanboy. There have been some valid points made here. If it was for work and it was going to seriously impact my productivity, I might hesitate. But if someone else was bearing all the costs...I'd still be quite tempted.