Have any of you played it?
I own it.
It is worth it?
If I had all the sims 2 stuff still on my computer no, but I too had my memory wiped. Starting again, it's better with sims 3 because it has some aspects of all the expansions, just not everything.
Best aspects?
Eh, there's pretty much loads to do. It'd take me a while to list it all, but you won't run out of stuff.
Worst aspects?
The whole "active family thing". It just overcomplicates it. Also, times too slow.