I loved playing roblox, and me and my friends had a great time playing it. I can name countless servers that I could classify as "favorites", and even some of my friends are on blockland.
It's probably a combination of nostalgia glasses, plus I was young and impressionable at the time (2007 - 2009). It was a great load of experiences. ROBLOX has changed less than I have, and I have long grew out of the appeal of the game.
Funny enough, as it is. I found no problem scripting in ROBLOX's Lua when I was twelve, but nowadays it's just out of my grasp.