Currently, DEC is worth very little again. This is good if you believe that it will rise again. It is speculative and offers no security, but all players should be aware of this.
For all those who believe that DEC will increase in value again compared to the USD then the following rule of thumb can be applied:
If DEC is worth little, sell cards, because that gives a lot of DEC.
If DEC is worth a lot, buy cards.
For all those who like to rent:
If DEC is worth little, rent for credits.
If DEC is worth a lot, rent for DEC.
For those who want to invest in Splinterlands, it is of course easy to buy cards with credits, but the best time is when dec is worth little. Then the prices for very common cards sometimes fall below 4 USD cents.
This article is no investment advice or recommendation and is only my personal opinion, which I share here. Opinions can also be wrong.