My wife and I have operated a business (actually, several businesses) for 20-some years now. For the first couple of years, we used her retirement savings and my paycheck to finance things. Then it turned profitable and expanded into 4 times the space. Running a small business is a 24-7 operation for her - I was happy to "retire" into the role of babysitter and technical support as needed, and providing a sympathetic ear when she was getting screwed by competitors, customers, employees, and city bureaucracy. She now has retrenched to a level she can operate her remaining business (real estate broker) from home (and car, and laptops, and cellphones).
But it hasn't made us bitter. I still volunteer at the high school soccer games (no more club or league meetings now that my kids aged out). My wife has been cooking all week for the free morning meals at her church. For years she was an international ambassador for NAR, setting up training and recruiting seminars around the rim of Asia from Taiwan to Dubai. She organized an effort to build housing for victims of a typhoon in the Philippines, coordinating money from NAR and local fundraisers (over $20k last week), construction of houses from old shipping containers, and land donations from the mayor of the worst-hit city. Yesterday she was appointed interim Chairman of the Board of a new public health clinic, tasked with finding permanent board members (usually that means people with money) and a professional executive director, who will recruit staff.
If she becomes as bitter as you act, I'd move in with the kids.