By far my favorite game of all time. Strangely enough before it came out my friend had me try the demo, and I had no interest in it. A year later I went back and tried the full game. Who knows what would we would live in had I not gone back to give it a fair shot!
You would have been missing out, that's for sure, haha.
I've done that before though as well. Buddy had me try out a couple minutes of an Infamous game and I was kinda meh on it. Came back like 14-15 months later and enjoyed it way, way more and actually had fun playing it.