I used to play this game from 11-13 years old. I tried playing it again a few months ago. It has a shitty community, servers crash all the time, terrible gameplay. Creativity? You can just throw that shit right out the window! You want to play with people of your age? Let's hope you're seven years old! Did I forget to mention that if you say the word "school," you can get in trouble? My friend has a computer designed for gaming and he said that Roblox kept freezing on him.
Roblox has an interesting theme, though. You can build anything and do anything with very little skill. And everyone once in a while, you will see a pretty neat level passed all the obstacle courses and Spongebob-themed levels. If they patched it and got rid of the little brats, maybe then I will HESITATE on the idea of returning to it. I hate children.
If you want to just know whether or not I like it, I will say that it's a fifty/fifty.