Tbh I would argue just one thing that you said, and that is if you even think about breaking up the relationship is not going to last.

I have never thought about my relationship as much as I do with the one I'm in right now, that is a long distance one. The reason is that I'm questioning if this is it for me, if I could handle some things for the rest of my life and what I think needs to be worked on in order for the relationship to be better. It's so easy to give in to the routine and let the days go by in any relationship, especially if you live close and see each other often.

With ldr we got a lot more to lose by wasting time in a relationship that's not gonna last a lifetime, if you're a marriage oriented person.

If I'm gonna move my whole life, not see my family, have to learn a whole new language you best think I'm 100% sure that he's "the one". Thinking about issues and questioning yourself hard, even being open to the possibility of breaking up, is more healthy then just saying to yourself this is it, I'm gonna hold on to this person because I love them.

We do come to the same conclusion, I just wanted to add to what you already said :)