It depends what you want at the moment mate. Investing on Steem (or Steem Power) is the long-term "bet" for me. However, if you need cash or to buy something (like a car), it would worth to save SBD and when it rises (it has in the past and it will again) then buy dollars or Euros, or whatever coin you use where you live and handle you business ;)

PS. This is not professional advice but the way I personally operate.