Backstory:
Been with DP 3 years, living together for 2. I have a DC from a previous relationship.
I have been self employed for approx 1 year, and now earn approx £11k PA. DP earns 5x what I do, so I am not entitled to any child benefit etc. I do still pay half towards all household bills, although DP does pay for the food shopping. Since being self employed I feel as though I'm treated as a SAHM rather than a WAHM. For example I am left responsible for almost all housework, meal preparation, dog walking (and obviously childcare, which is fully my responsibility anyway). I am also at university part time. All this may or may not be relevant.
My issue is with my partner's after work drinking. It's only every couple of weeks, but it's his lack of consideration/maturity around it which is making me fume. For example, not being home for dinner and not letting me know (while I was waiting for him). Falling asleep on the last train home due to being plastered, and then being stranded miles away. Leaving his laptop bag on the train, so he then had to spend a whole day out of the weekend travelling up north to get the bag back (we see him quite little during the week so weekend time is quite precious). His only "responsibility" is that he needs to be home at a reasonable time on one particular night as I go to uni, so he needs to get back for our dog. Lo and behold, this week, he got caught up drinking after work and was 3 hours later back than he should have been, meaning the dog was alone for 6 hours.
I mentioned marriage at the weekend and he panicked beyond belief; it has obviously never crossed his mind, despite being 33 years old.
My worry is that if we ever had a child, he would continue with this same attitude and everything would be left to me. I keep thinking that I would be better off financially without him, and at least I wouldn't have to put up with his mess, his washing, and having to be continually frustrated by his drinking.
On the other hand, I love him dearly and really thought we'd be together forever.
Am I expecting too much? Or should I get out before I spend a lifetime of feeling let down by his lack of consideration/ inability to have any responsibility?