I have 17000 HP staked and 25000 SPS staked. I am actually powering down and slowly starting to sell my monsters. I do this because Splinterlands are making it more and more difficult to play and earn. I have a nice set of cards, but for the Wild part of the game. Now I must pay 2000 DEC to play. Further on renting cards out became more difficult, previously you could just rent out once and they stay available for renting, now it lapses and one need to re rent it out over and over, at a cost. Then there is Soulbound cards, that cost more to unbound than what they are worth. Why do we need glint, we could just earn DEC and pay for cards??? As you say this should be an investment, but these issues just make it a bad investment.
It is just be coming more and more frustrating to play Splinterlands.