Does This Happen with Everyone?

My friend and his girlfriend are fucking right now in the shower (the bathroom is right next to my room) and hearing them fuck turns me on. It’s not even that I think she’s attractive it’s just the moans and the sounds of the act that get me going. It’s not new to me just the first time I’m admitting it. I’ve pleasured myself to the sounds of friends banging before, (in high school my friends were popular with the ladies - I was not). It’s still a thing even though I’ve had my fair share of fun. I’m thinking it’s a forever kink or is it not a kink and just natural to get aroused over sexual sounds? Also I’m kind of into cuckold (being the 3rd that is) and watching turns me on. I don’t like sharing my women but am turned on by the fact someone would share their women. Does it all play a role together? Mostly interest to hear about the listening and if women could chime in on this too that would be great.