I like this hobby because it's cheap, fun, diverse, and you can actually share it with other people.
Here is my take on some other hobbies I have experienced.
Building fast cars is super expensive, and more or less a solitary thing. You build something fast and then you cant have any (legal) fun with it on the street. So then it's track days for you, which are limited and totally expensive as well.
You could also make a pretty car, then you waste your time sitting at a show answering idiotic questions all day long.
Wheeling is fun, but that's just breaking parts and being stuck/stranded all the time, and RC cars are pretty much the same thing, just not as fun.
Sand quads, dirt bikes and the like are plenty fast, also fun, can look cool, but are dangerous as hell. There is plenty of opportunity to break crap here as well. Not to mention the expense of the support vehicles needed.
Dont get me started on boats.
