Somewhere along the line, Christianity got a bad rap as being boring, tedious, or otherwise unpleasant. Sort of a "should" thing. E.g., "I'd rather have fun, but I should probably do this."
A more accurate casting of faith & desire/ joy comes from C.S. Lews (The Weight of Glory), when he writes:
"Indeed, if we consider the unblushing promises of reward and the staggering nature of the rewards promised in the Gospels, it would seem that Our Lord finds our desires, not too strong, but too weak. We are half-hearted creatures, fooling about with drink and sex and ambition when infinite joy is offered us, like an ignorant child who wants to go on making mud pies in a slum because he cannot imagine what is meant by the offer of a holiday at the sea. We are far too easily pleased."
This raises an interesting question. If true, why do we do it? Why are we too easily pleased?