Just got a new computer that can run D3. Should I get it?

I was crushed when I found out my computer couldn't run D3 at release since I had played D1 and D2 religiously. Now I just got a new computer, and I just want to hear if it would be worth to get?

Are they lots of players? Is it fun to play multiplayer? Is there any part of it that reminds of D2?