Recently browsing on the blockchain, seeing others post "caught a sandwich + arbitrage," my first reaction isn't wow, an opportunity has arrived, but rather: who is paying the transaction fee... Honestly, for someone like me who picks up the leftovers, I'm most afraid of becoming a "slice of bread" in someone else's strategy, getting squeezed and thinking I'm eating meat. Layer 2 is always arguing about TPS, low costs, and subsidies—it's lively, but when it comes to small amounts like mine, slippage and being front-run once are enough to make me worry for a long time.

Now I’d rather go slower, batch transactions, set limit orders, and chase fewer hot pools, and just be happy if I manage to claim something forgotten.
What I fear missing the most isn't actually the opportunity, but rather wanting to save some gas and ending up paying more in tuition fees.