nissan sentra headlights - car w/34,000 miles has blown out headlights two times

what is wrong with the electrical system tokeep

blowing out headlights? i find this costly and the car

seems to be breaking down already, with the ride not

as good. 34,000 miles is not holding up. my nissan

sentra (2005 model) is not holding up. i am

dissatisfied with it. I see no reason for the

headlights needing to be replaced so often.