Is it neccessary for my indoor cat to have a health examination every year at the vet?

The veterinarian want to to do a comprehensive exam that include checking the heart, lungs, mucous menbranes, eyes, teeth, skin & ears to my cat & need a stool sample in to check for parasites. I have made an appointment but now I’m having second thoughts. Does the vet really cares or just want my money?....please help me! P.S. He wants also to give my cat vaccinations for rabies and FVR/CV/CL. Is it neccessary to do it if he is an indoor cat?