My current conclusion is pretty timid: either hold onto spot assets and don't touch futures; or if I really want to trade futures, then act as if I could be wiped out at any moment, with a position so small it doesn't affect my sleep.

Honestly, not being able to hold spot isn't usually because you don't trust it, but because your position is too heavy, and a slight rise makes you want to lock in profits, a slight fall makes you panic; the same goes for futures liquidation, leverage is basically an amplifier for emotions. My simple method is to first set the "worst acceptable loss," then work backwards to see how much I can buy, and leave the rest empty.

Recently, I see everyone adding leverage to test network points or guess whether the mainnet will issue tokens… and in their excitement, they increase positions and leverage… the surface looks calm, but underneath, the dark currents are all the same addresses moving around. Anyway, I’ll take it slow first, don’t mistake luck for skill.