surely that depends on whether, for you, its all about the destination (the cum) or the journey there. Personally, i love the journey - the build up, kissing, some touching and play, the BJ, maybe ro, penetration, being inside her and (some element) of pumping away. If i cum that's a bonus but if i don't, then no worries - i have still enjoyed it.
would i enjoy it so much if i switched some activities around so that i cum quick and then try to do the other stuff? Maybe but I don't think so!