Hi. Very long thread, for which I can only profusely apologise.
Context
12 years ago...
My MIL never liked me and didn't like my parents either. This stems mainly because of the fact that my parents were not very affluent and weren't able to absolutely shower me with gifts before the wedding. MIL always looked down her nose at me and my parents because of this and my father even told me to get out of the engagement but I didn't want to leave my DH-to-be, despite his parents' petty behaviour.
Wedding arrives and everything goes fine. Leaving my parents in Canada, my DH and I move to the UK with my in-laws. My time there was horrendous, being treated like a slave, expected to cook/clean all the time, with no self-entertainment due to no one having much money for my own TV, etc. I, of course, had no control over TV and came out to eat at meal times - even these resulting in arguments for no reason. Not long after marriage, DH becomes redundant and MIL seems to think I'm cursed and that it was my fault. Many arguments occurred (after which my DH is all "go apologise to DM" - just to maintain 'peace' and never really supported me in this) during this period of time until it got to the point where they eventually said get out - despite my DH only having a very low income.
We move and that's it. Contact decreases as we kept moving throughout the country as I had been studying for many years to become a qualified [not revealing my job] - very well paid and only qualified in April 2017. We are blessed with 2 DSs and keep going to IL's house as they wish for contact w/ my kids. Usually during these, I'll get taunted for something or other. Absolutely no call for it as I'd never tried to be disrespectful to them.
Now...
Meeting kept happening during half terms, etc. A few years ago now I just stopped going because of being tired due to studies and lack of willingness to sit and be taunted - they clearly had no respect for me and I have none for them. DH and I argue about this all the time because he thinks I should go and tolerate their bs because "one has to" as they're family. I go probably once a year now - if that. Went a few weekends ago for a wedding. I was working all night due to the heavy nature of my job (between Friday night - Saturday 7AM). Obviously, I was tired. I woke up at 3-4PM. Had to get ready and leave by 6PM but couldn't because of the circumstances - we arrived at 9PM. Next morning, woke up at 10AM. I needed to get back because my house was a mess and I had no weekends before as I was working through all of them - I needed time to do whatever I needed to do without wasting it all at IL's. I kept putting pressure on DH and had to cause a bit of fuss to get him to leave because we had to wait on his DB (my BIL) to come from his house to come see kids. He arrives really late - and I wanted to get back desperately because then BIL starts arguing that I always want to leave whenever I do come - but if I have things to do, what can I do about it? I made the effort to go, spent time, stuck on a smile and wanted to come back.
DH feels that I created too much fuss to leave and embarrassed him because of my 'poor behaviour,' which wasn't even that bad until BIL arrived and started arguing with me - during which I still stuck on a smile and explained calmly that I needed to work the next day and had work to do. He thinks I should stop bringing up things because they were 12 years ago - but they affect me because they were directed towards me, not him. And of course, they're his parents - not mine.
Was I being unreasonable to want to leave for home? (DS is really worried as he saw DH looking at houses on the internet today and has ignored them all day.)