Have wondered for ages too,as got hundread's of med kits,don't go buying them at all,given at start of games lots when you get free stuff but,so think tha'ts where most or all came from?.And not sure when i used them last before say this week,when actually used a med kit.Lots of times tried injure self with weapons etc..,and lots of the time nothing,or you just suicide,so how got inured,and was quickly able to use the kit was luck maybe.

As don't know when i will get to use another med kit even?,i wish i could sell them back,or something for other weapons or uniforms stuff etc....
Another different thing i hate on game besides all the hackers,which been there for ever and always will be,by the looks,don't know why i play it so much too,free,and dream of those fancy guns,tanks,uniforms etc....Many so dear,will never get them,a long grind,as not going to pay cash on these games,only if get rich one day,maybe then buy some with real cash.Got off track,the other thing,just how helicopters die so fast,or for me they do,mostly go up and go down fast,if less players,maybe longer,but don't last a whole game for sure,who dose?.I wish you had flares,or some jamming thing to stop the rockets shot at you all the time,suppose small arms and AA can deal with some,or last little longer in the air.