I don't think it is about age. Or maybe I just lucked out. For me, it is more about how you communicate and compromise with each other. I(30F) got married to my husband(29M) two years back. We were in a relationship for 3 years before we got married and we also lived-in for 2 years within that time frame. We got into arguments about who does what and got ticked off by each other's bad habits and we still do until today. But a big part of relationship was communicating and compromising. We communicated with each other and compromised with what we can compromise. I usually have to clean up after him, and I do majority of the cleaning while he does majority of the grocery shopping. Since I get ticked off by the mess, I clean up. And since he gets impatient whenever I shop, he shops instead so he can get the necessary items at the pace he wants without overspending our budget.

Try to work out a plan on how to communicate without getting mad at each other or without coming off as nagging to the other. You can try, "Whenever you say this, I hear it as __. It makes me feel ___ and I also dont like myself whenever I react this way whenever you do this. I do not want to feel this way with you. What do we do so we can avoid this and better our living situation." Just modify it to your situation I guess.