What I'm getting at is that, its really difficult to get people to love something you build unless you love it yourself, Seth Godin touches on this in his book "This is Marketing"
I like the data driven approach to product development, but sometimes passion trumps data, if you build something you yourself cannot live without, it's much easier to slowly win people over to your way of thinking.
And if you say to me "well he was the only one working on it", then my answer to you is like that punchline in the Famous "Coming to America" skit ...
"aha!"
It is infinitely better to work on problems that you have a firsthand understanding of/experience with otherwise you're always going to be depending on others for product insight, which is not terrible, but much much harder than when those insights come from you directly.