Yes... it's true that as long you keep your level down, it would be easier...

but why to play an easy game? what is funny on that?

Besides, getting higher levels mean seeing more things. Monster shows nastier powers, GF's learn more abbilites...

If you're the kind of "not miss a single thing", like me, I would suggest you to keep increasing your levels gradually, in order to get to the top at the end.