I am thinking about leaving my job cause even though the work life balance is amazing and team is great, it doesn’t pay as much as tech companies around where I live (HCOL) and I feel like a terrible person for feeling that way.

It's up to you, but if you're happy and putting money in the bank I'd caution against changing unless you know you're going to be getting a similar thing AND more money elsewhere.

So many shit jobs out there full of useless people.. you can find yourself switching multiple jobs a year for several years until you find something nice again, which gets harder and harder because your CV makes you look more and more unreliable.

Salary isn't everything.