The suit is protective as it can be without being in the way. He is constantly getting stitched up by Alfred (aren't we all?) and he goes out again, but he is still hurting. He just blocks the pain.
One good example is in HUSH. Where Catwoman sees all of Batman's scars on his back alone and...
Well my bf and i have tried several times but i just cant take the pain..he goes to a point that i feel a stinging sensation and then i just cant take it and he has to pull out. how can i make it easier for me??