I think, in an ideal world, both parents would work part time and be at home, splitting childcare & cleaning, cooking etc equally. In reality, part time jobs at middle/senior levels aren’t so easy to come by and one partner tends to be the higher earner.
IF we could guarantee relationships wouldn’t breakdown, then having one partner work and one stay home is a reasonable compromise. It does make every everyone's life easier and is more relaxed - as well as enabling the WOHP to focus more on their job and progress more (sadly that’s the reality of life).
HOWEVER, given the number of relationships that do breakdown, I feel the SAHP is made too vulnerable doing this and needs to think carefully about that.
BIGGER HOWEVER...IF both WANT to work, they should be fully supported in that.
In your situation I’d use the time to do some studying or training to get more of a career, something more rewarding and better paid because I, personally, couldn’t stand working in a call centre type of environment.
I understand your DH’s POV, it’s not like he’s stopping you from doing anything at all, he just realises you being home enables him to progress in his job, which brings in a good wage for the family and doesn’t think sacrificing that for a job in a call centre makes sense and i agree with him. It’s not like he’s saying you can’t work at all or volunteer or train for a career.