I wouldn't say it's weak Kevin - you'll have experienced yourself how hard sobriety can be.
Be careful not to underestimate things or people.
I think you'll find a lot of here maybe even most of us have relapsed.
I can only speak for myself, but I relapsed for a variety of reasons:
I wanted to get a hold of my drinking, but didn't want to quit for good...
I expected just not drinking would magically transform my life, and it didn't....
I didn't start to develop any others ways of coping with life, people, things, stress etc...so when the crises came as they always do, I turned back to booze.
and I just plain felt uncomfortable not drinking and I didn't look around for other ways to get through that.
Relapse is fairly common - but it's not mandatory - especially not if you do the work.
You get out what you put in, Kev.
D