Is It Only Me?

I am straight and have never had any interest in sexual activity with a male. My sex life is great and I usually fuck my wife maybe 4 or 5 times a week. Sometimes more, especially if we are on holiday.
The thing is though, I love to finger fuck myself in the shower every morning. It really turns me on pushing a finger up inside me...feeling the soft walls of my anus and finger tipping my nut.
I don't imagine being fucked while I am doing it...I get as much kick out of feeling , as I do being felt. I don't want a dildo in me, as that would take away the sensual feeling I get with my finger.
I stay soft during the whole thing and don't get off. We fuck in the morning quite often so I have often cum just before my shower.
Am I some kind of oddity, or do lots of guys do this?