Questions about circumcision

M18 i was thinking of getting circumcised but i got some questions i dont understand
1 this is more for people who did it in there teens and adult but does it hurt more if your older then if you got circumcised as a baby
2 did they use anything to num the pain or idk knock you out? ☹️
3 i know it hurts when peeing for a little and yeah this might be person to person but how long
4 again this depends on who you ask is it worth it?