By JLG killing himself
>how did that gurantee anything?

It didn't. But he believed (foolishly, in my opinion) it at least gave him a chance, whereas Willis killing Blunt would merely ensure a horrible future.

why not just off his older
>self?

Can't hit him with that gun from far range. They talk about the blunderbuss's range roughly a billion times in the film.

So was tht rainmakers mom or not?

Yes. The backstory of this character is spelled out pretty clearly.

did he essentially
>sleep with his mom?

Did JGL sleep with the Rainmaker's mom? Yes, he did.

has all the events in the movie happend b4
>and it's just 1 big loop?

Don't see how this is possible. It's thematically a loop in this world about mothers and sons, but no, JGL killing himself doesn't create a loop.

bruce killing off a whole army just
>like that and then struggling to murk lil man dont add up.

Well, that one little man was someone he was emotionally attached to who also had superhuman crazy Garrett Dillahunt exploding powers.