masturbation:
i am an expert wanker. i have dedicated many, many hours of my life to wanking. experimental wanking, setting aside entire afternoons to wanking, spending a fortune on toys and lubes. it's not a challenge or a pressure or a chore. it's one woman kicking back and figuring out her body.
i have feeling in my vagina, but it's not sensitive. if you sit still for too long and get a dead leg, where you feel pressure but it feels less real? that's my cunt.
i went through a phase of trying out different things in there.
vibrators, no matter how powerful the vibrations, how slow the build up, just don't produce enough sensation.
pressure... slowly increasing the pressure, still nowhere near enough sensation to so much as tingle. the next thing i know, the damn dildo has snapped in half! and still, felt bland.
electrodes work better. they certainly create a sensation, but it's more calming than exciting. i put them in to fall asleep.
...actually, i fall asleep wanking a lot. if there's not clitoral stimulation, i relax to the point of 40 winks.
so, no, it's not all in my head. it's all in my cunt. it, quite simply, lacks the sensation to get me within a million miles of orgasm.