Recently, when checking the on-chain activity, I keep seeing the words "sandwich" and "arbitrage."

They say it's an opportunity, but most of the time I feel like I'm just paying others' transaction fees...
You think you're quick enough to copy the bottom, but when slippage opens and you check the transaction, you see someone cut in line before and after, leaving me stuck in the middle, staring blankly.

The income of miners/validators, MEV, and fairness in transaction ordering have been criticized again lately.
I can understand, after all, from an ordinary person's perspective: for the same transaction, the moment I click confirm, I start being watched.

Now, to avoid impulsive orders, I have a habit: when I see something I want to chase, I first close the wallet page for two minutes, take a sip of water, then come back;
then I glance at the mempool/transaction distribution (just a quick scan), and if I find it's "too hot," I simply don't compete, preferring to miss out.
To put it simply, the profits that can be made are not necessarily the ones I can get; better to preserve my own funds and not pay others' transaction fees.