If you're going to do something humorous, you have to do something you think is funny. As you said, humor is subjective, and while getting a sense of what the majority would like might guarantee a bigger audience, that doesn't necessarily mean you would like what you're putting out.
Humor is one of those genres where it can easily be a hit or miss so you kinda have to entertain yourself first and foremost. Personally, I giggle senselessly whenever I'm drawing, or rereading my own work (whether a silly gag short story or my absurdist, "daDas" comic). If you can't laugh at it, aren't having a good time doing it, then there really is no point in adding humor at all ¯_(ツ)_/¯
Do you have a "funnies" comic published on the site yet?