Gamers: Why does health recharge?

It used to be in multiplayer first person shooters, you had to worry about your heath. There were heath packs everywhere that respawned. It added an element to free for all play that is lacking in today’s first person shooters. You had to guard the health. Has today’s youth been spoiled by the ease of today’s first person shooters? If you are in a fire fight and get hit too much, all you have to do is hide for 3 seconds and you are perfectly fine. This entire scheme is dumb! Why do games now use the rechargeable health? Which do you prefer and why?