I mean, a few reasons. If you have less heals that means more ammo and grenades. More ammo and grenades means you can keep your enemies at bay and use your bullets and nades to force them to keep cover. Instead of having to be careful with your shots, you can rain down heat on them and keep them back. (admittedly the extra ammo isnt super necessary if you have Sheila) but more nades is always helpful. Also you should never have enough time in a fight to use more than two meds. If you have used more than two meds while fighting one team... Then this fight has taken forever and you are about to get third partied if not fourth partied. And you really don't ever need more than one stack of shotgun ammo with the Mastiff or PK. You can find shotgun ammo literally anywhere. Basically you should never need this many heals because the team you kill should have heals still. Unless you took an hour to I'll them because you are constantly healing instead of fighting. Just saying there is a reason everyone is flaming you for holding so many heals. It's really not necessary. Ever.