Han is probably the most loved character in the series, if Finn is supposed to be a Han type which is what I think they are going for, then that's great. Han is not one dimensional.
Han has a lot of that "fukk this, I'm out" attitude. He also is a liar and a thief but he's got a good heart and always ends up doing what's right and he is brave... and even if it's not a situation he is entirely comfortable with and no knowledge, he'll do his best and find a way to make it work.
That is exactly what the Finn character is.
The people who bytched in this thread for pages and pages without even seeing the fukking movie mind you need to hit the weights and get a clue.