Just now on the blockchain, I saw a bunch of people talking about "sandwich/arbitrage" as if it's like picking up money.

Honestly, you think you're catching opportunities, but you might just be giving away fees to others: slippage kicks in, routing is rerouted, MEV bots bite from both sides, and by the time you execute, it's already been written into someone else's profit sheet.
What's even funnier is that recently RWA, U.S. Treasury yields, and on-chain yield products are being compared, with the comment section constantly saying "more fragrant," but many so-called yields are actually just incentive subsidies + fee redistribution.
When subsidies stop, who will take the risk?
Now I prefer to do less, and if I really want to participate, I only dare to small-scale, only in pools I can understand.
At least if I get "cut," I know how I got cut.