Do u think this is fair

I’ll start off by saying idk how controversial this is but I’ll move it if I got to.

My dad retired 2 years ago at the average age of 62. He worked a physically tiring job for almost 40 years and at the end started getting depressed about going to work. He started deteriorating a ear before he could retired but made it through. Now he spends his days sitting at home and watch tv. Ik he worked hard his whole life and definitely deserved to retire.

He brought home very little money, my moms a nurse who makes bout 85,000 so with both incomes it was ok. Now its just her tho. As of last year she had to start working 3 jobs 7 days a week so we could afford paying off all our bills and my brothers colleges and stuff. My dad refuses to get a small low key job which ig is ok, he doesn’t have to. My mom doesnt push it. But imo it’s not fair my mom has to work that much, plus she’s done the math and won’t be able to retired until she’s in her mid 70s. Do u guys think this is fair? Ik u don’t know anything else except the little bit I just told h, but if u and her husband or ur parents where or are in this situation, what would u do?