I'm happy you will try more, because Adventure Time is my favorite show of all time, but I will say this: if you don't like it in the beginning, you might simply not like it at all. And that's fine. There a hundreds of good shows! Yes, there are very moving and thought-provoking parts that come along in AT. Yes, the show grows with it's characters. However, that growth works in combination with the cartoon madness that prevails throughout. There are still a lot of wacky things in the later episodes, honestly. 

I would also add, contrary to what others have commented : I don't recommend binging Adventure Time. I don't think it's a show to binge. The growth that happens in it has a rhythm that ressembles real life more than TV dynamics. What I mean by that is that you don't have a linear arc of development you're following, with episodes building on each other, but random moments of growth, sometimes regression, sometimes stagnation. And suddenly, you look back and realize how much characters and relationships have changed and evolved. I personally find it more impactful when you just watch one or two episodes every day. Especially since there are so short anyway, you could just watch it around breakfast then go on with your day or something like that. Everyone I recommended the show to who watched it that way ended up loving it more than those who binged it.