I love graded cards because of how they look, knowing what condition they are in, and saving them from further damage (like Nick, I have kids, and it's difficult trying to keep them away from it some times). However, what I don't like about graded cards is 1) grading is expensive and 2) those selling graded cards think they're now priceless. Now, I know not all grading is expensive (PSA, SGC, etc.), BGS is expensive. But it's so worth it. I can't stand PSA, SGC, etc. I love BGS and BVG and will only ever submit to them (unless heaven forbid they quit grading cards). But I was adding some graded Pistons cards to my watch list (not easy as not many people grade Pistons cards) and I saw one that was BGS 9, the card has an $8 BV HI, and they are wanting to sell it for $150.
I still added it to my watch list for future knowledge, but I just find that ridiculous. I saw someone else with another BGS 9 of the same card, and they were selling it for $13.95 OBO, and that seemed more reasonable to me. And eventually, when I become a mega millionaire, I will have all of my cards (even low end base cards) graded.
In terms of your OP, I think selling graded is better than raw.