In my case it's not that I enjoy to taste my own cum or that it turns me on. But my wife says that my cum tastes pretty bitter, yet she swallows it each time that I decide to cum in her mouth. So if she goes through all that bittertasting for me, then it's pretty fair to adore her and kiss her if she wants a kiss.
Sometimes she wears it on her face all day long or in her hair for days if we're in weekend without washing it out. Making me feel like I marked her as my teritory.

In some cases with pink eyes cuz my cum stinged her eyes while giving her a facial.
Since she's allready married to me and she still lets me enjoy these things for over 8 years allready, then hell if she wants to be kissed, adored, worshipped or whatever the hell, she deserves it.