How would you feel if your man stay out all night, every night just hanging with the boys

How would you feel if your man works all day,1pm-10pm comes home for less than 1 hour then leave out for hours until 2-3am every night.. Half of the time he sneaks out. He says he is not cheating. he is "Just hanging out with the boys in a little apartment". Which consists of drinking, smoking , and rapping. Yes, you guess it.. An inspiring rapper.That's why he always be out. He said its business for music. But he never has anything to show for it beside arguing all night and a hangover in the morning... We are still broke and you haven't made any demos tapes. He said I'm crazy because he is not cheating, but i dont believe him 100% but its more than that to me.. We have 10 years, 3 kids. He can hang out on the weekend!! Am I wrong? Just tired of waiting up at night. My relationship is on the line

P.S He is 31 years.. A grown ass man not a young boy.