jhilldrums has a good point on where is the damage.
I play with plastic beaters, EMAD 2 , and impact badges. I tend to wear the impact badges out if they are cheap though. I have slug
percussion ones on now which are a thin polycarbonate type material. I don't know if they still make them but I highly suggest them. They seem to be more durable and don't impact my head vibration quite as much.
I change heads once a year... just for good measure. Though I feel they have lots of life still on them before I change them. Since I record regurally I feel the expense is worth the fresh heads.
Also ensure that your bass drum is as parallel to the floor that you can get it. If your bass drum is angled and if you tighten down your pedal you can cause damage to the hoop, the drum head, and even the drum over time. Check out this video on evans