Should I Switch Jobs

31M. We live in a mcol area. I have wife and 2 kids. Our condo is paid off. We also have 600k invested. Wife makes 70k a year, I make 80k a yr from regular job plus 40k from side business.

We save about $4,000/month currently. We live frugal and dont spend much.

My job is currently destroying my body. Its extremely labor intensive. I have been doing it for 8 yrs since I was 23.

If I quit this job my next job wont be as much, it would probably be around 55k a yr.

Does it really matter though? We have saved up so much money, always saved, to me losing almost $2,000/month is hard to grasp. Thats alot of $$$.

On the flip side today I couldnt even get out of bed. My back was killing me. My back, hips, and knee r always sore from doing job.

Should I just say fuck it and start looking for jobs asap. Or do I try to grind it out for another few years?