It's not the worst thing in life.
Playing tennis, before when I could hang with strong 4.5 doubles players, now it depends how smart/ruthless they are. If they play a big hitting game, no problem. If they dink and doink, drop angles and deep CC lobs, I'm in trouble.
Same with my peers at 4.0.
Better to play with 5.0's, because they usually just go thru the motions playing their normal games, and the ball actually reaches me with depth and pace, something that is better than short mishits and weirdo slices for us mobility challenged players.