You're going to get bias answers by asking spam directly, cause it's going to be all the people who stay in spam because they find it fun.

To try to answer your question as neutrally as possible though?

It depends. Do you like somewhat random, non-focused lollygagging fun on the forums which sometimes leads to serious talks and a supportive community?
You'll probably have fun.

Do you prefer more of a focus and direction? May it be overall theme or simply doing an action with people (ex: Having an RP, Playing team death match, debating X etc.)? If so you'll probably have more fun elsewhere.

Plus popularity levels do exist here, so you have to be willing to either play the popularity game a bit. Or simply be able to tolerate it being around and be able to deal with any criticism given for not playing it. If having such a thing around isn't your cup of tea (Though, let's be honest. [i]Everywhere[/i] that people gathers deals with popularity in one sense or another) then once again you might have more fun elsewhere.

Either way though, welcome. :)
And I hope you have fun may you choose to stay or go somewhere else.