husband wants to have sex every day is that normal???

My husband always asks for sex every day. Literally every night. I wonder if he's not tired from work??? I'm at home, you know... Sometimes I do feel tired but I feel bad if I don't say yes to my husband. I've even politely declined, but he still "insists" 😂 but seriously, is this normal? I'm a bit worried that if I don't say yes to him, he'll seek satisfaction elsewhere...