If anything, I am drinking the best coffee of my life after switching to decaf, after saying no to bad supermarket and office coffee. In many big cities it is possible to find very high quality specialty decaf coffee in local roasters.

My favourite is Colombian beans decaffeinated with the "Sugar Cane Process". In my opinion this method produces the best tasting coffee that preserves the qualities of the origin beans and it might be more environmentally friendly compared to methods that require double shipping the beans to a 3rd country for decaffeination.

I've been buying decaf from Happy Mug. Price is reasonable, comes as beans or ground, is fresh, and I think it tastes good: https://happymugcoffee.com/

The Starbucks decaf espresso is pretty strong. It can be hard to find though.

I like Dunkin Decaf