For me, it just reminds me that for all those minutes, I could've been doing something else.
Same could be said of watching TV, posting on internet forums, sleeping in, playing video games, etc etc.
True, but I actually want to do those. Masturbation is just something I do because my libido demands it and will have me unconciously trying to if I don't do it willingly.
NINJAAAAS
I might be getting into TMI territory here so don't respond if you don't want to, but why don't you want to do it? Besides the time wasting thing. Certainly you enjoy it...?
On another note though, it's one of the common behavioral addictions (so it's in the same category as a gambling addiction). If you find it debilitating then there could be some outside factors at work here (like being constantly stressed out or depressed and needing some relief).
I see no value in it apart from when my libido tells me to and I lapse into a primeval state of libido. I don't appreciate the intrusion into my conciousness, so yeah.