Hp — printer will only print part of the time

My HP printer will only print when it wants to print. The rest of the time, it will spit out a sheet of blank paper. It goes through ink like a thirsty man in the desert. Given the experience I've had with this printer, along with every HP computer I've owned, I will NEVER buy another HP product ever again!!!!!!!!!! We currently have 4 computers in the household, and have had computers in our house since 1990. We use both PC and MAC products. We are not newbies when it comes to electronics. It is not user error - it is simply a poorly made product. HP needs to stick to a few products and do them well instead of cheaply making hundreds of products that are just that - cheaply made products that fall apart close to or soon after the warranty expires.