I have tasted my own, and I don't mind it, but it doesn't really do anything for me. Just not that exciting, for whatever reason, but nothing bad about it.
I have on a few occasions had cum on my tongue (not my own) and kissed the person it belonged to, giving them a taste of themselves. First thing I noticed is girls seem to enjoy that more than guys, but there was only one guy who didn't like the taste (I hated the taste of his cum too though!).
I'm a nosy bitch so I often ask if that's the first time they tasted their own cum (after putting it into their mouth with my tongue) and every single guy I've asked has said 'yes', while it's never been a first time for a girl.