I think grid/DCA and a single trade are essentially about "what to exchange for sleep." If you can't monitor the market constantly and don't want to be emotionally shattered by a sudden fluctuation, then grid/DCA is about breaking down decisions, at the cost of paying more invisible friction points: fees, slippage, and if luck is bad, getting squeezed out (like MEV, those who understand know). Conversely, a single trade looks exciting, but you're essentially putting all your risk on one entry point, and just glancing at it before bed can easily lead to overthinking.

Last night at 2:30 a.m., I was still looking at transaction records when I suddenly thought about recent cross-chain bridge issues and how oracles are reporting outrageous prices, and everyone is just "waiting for confirmation"... Honestly, the more these moments happen, the less I want to tie my position to a single event. My conclusion is pretty blunt: those who can accept small continuous losses and gains, and are willing to pay friction costs for stable emotions, should choose grid/DCA; those who want clear correctness and are okay with losing, are better off with a single trade. First, preserve sleep, don’t gamble against your biological clock.