Personally, I do not.
I enjoy building with Add-Ons.
I like to use and experiment with new brick types whenever I can.
But, that said, I don't like joining a server with every random brick pack going, and has loads of unnecesarry Add-Ons.
It's for this reason that I like theme servers.
Because they give me a chance to try new styles, and I can incorporate Add-On bricks into them, and they tend not to (atleast the good ones, that is) have lots and lots of unnecesarry add-ons.