I only invest excess SBD's when they are high because then I feel I didn't lose anything. I am more focused on Steem than ever because so far every dollar I invested is worth 4-5 times my initial investment. I don't see that with anything else. Also SP lets my earn more, there is no litecoin power or bitcoin power. You invest and then just sit there and hope it goes up.
Sorry to make another pump up the steem comment though.