Im actually pretty sure he was done being a super hero because his family had been targeted in dark reign and he didnt want to keep them exposed to that.

But the second steve asks he seemed to drop everything and go back to basics

He had to listen, because it's captain America.

Still though, one of those things where a characters progress is just undone without any consideration.

And his wife is Jessica Jones. What's the worst that could happen?

Yes, it was a bad idea. But the reasoning marvel gave, works.

Well, his baby got abducted, he was nearly manipuled at the risk of persecution of his entire family, then a ton of other bad shit that took the entire new avengers to resolve.

The reasoning was just "because cap asked".

They could have picked anyone else to run the team

They could have.

If Jessica had joined the Avengers she wouldn't had been his wife.....she would've been Steve's wife lol

I mean, we know if cap asked luke to do something, he would do it. Because he trusts him, and respects him. Cap chose Luke, because cap trusts him, and thinks he's the best man for the job. That's what I think, at least. It seems reasonable. In-universe.