I can't disagree with you on that. If you didn't invest in this for a minimum of 3 years, then you would be better off trying some other plays. If you are here for the long run, then you may be rewarded huge, or you may go down with the ship. Either way you hedge your bets and always keep money free so you can do some other plays out there.
You invest what you believe in, and trade for what you see as a chart play or momentum play.