It's a balancing act, of course:
1) We the supporters see how poorly the Liverpool players get treated by the neanderthals when on England duty, how poorly they are coached, and how draining the inevitable loss in major competitions is, and how it often derails our season when they get injured in a meaningless friendly against Romeolativiastan.
but
2) for 99% of the players is a massive thing to be selected - it's pride, an affirmation that you aren't just good - you are among the best (yeah yeah pipe down), you probably have some bonuses written into your contract, and it can also help you on your next contract or when moving clubs.