but I don't have to make this mistake

I've been thinking a lot lately. I'm still trying to work this out, so bear with me.

Okay, so as you're growing up it's your parents job to provide for you. Materialistically, emotionally, physically, etc. It's just (from what I've gathered anyway) that they have to essentially sacrifice a lot. Do things for you when they really don't want to, tell you things that they may know aren't right but do so anyway because they know that's what you need to hear at the time and vice-versa, not tell you things because they're trying to protect you from things that you don't need to know. They do all of this, and much more but what I'm focusing on here is the sacrificial element to the relationship.

So fast forward now to when said child is an adult. Now, after all these years are we (the children) expected to do the same for our parents? Sacrifice all our emotions and feelings and just suck it up sometimes when something happens that we don't necessarily like and just roll with it because it's what they did for us or because it's the right thing to do? Or do we try and handle it in the most adult way possible because after all, we are now considered adults? Is it give/take or take/give? You take from them for so long, does there reach a point where you're expected to just give?

I hate having this type of complex as I get older. It seems like as you get older, the relationship with your parents should get better. Less complicated as you're doing your thing and they're doing theirs. The mutual love is still there, obviously, but you're a grown up now and it's time to move on. How do you know when you're in a situation that allows you to act like the child instead of the grown up? I feel like, I should be allowed to freak out sometimes - I am still the kid and all but the older, rational part of me knows that adults don't (or, shouldn't) act that way. It's not my life anymore and I'm in no right to fight what it is that they want.

I really wish sometimes I could just be a kid again.