Assuming you are only talking about storage of the bike.
With a strap you might can loop and fasten it over beams or other structural supports. The you won't be damaging things cosmetically as would having to screw a hook or mounting screws.
About the only negative I can think of for a strap is that you can't simply put the bike up with out having to do something with the end of the strap. So if your bike is heavy you might need a third hand.
Last edited by Iride01; 06-14-22 at 08:01 AM.