I took my first short in 2019. I closed it two hours later, in a small loss, because it felt wrong.
The chart hadn't changed my mind. My gut had. Selling something I didn't own felt like betting against the thing I'd spent a year learning to love.
The asymmetry in your head
Think about how a typical trader talks. A long is "my position." A short is "a bet against Bitcoin." Same instrument, same risk on paper, completely different emotional weight.
Part of it is the math, and it's real. A long can only lose 100%. A short can lose more than that, in theory, if price keeps climbing. That tail risk is why shorts need a hard stop and sensible sizing. It isn't why most of us avoid them.
The bigger reason is identity. Most retail traders arrive in crypto as believers. Shorting feels disloyal, and nobody enjoys feeling disloyal with money on the line.
What the bias costs
Here's a simple illustration, not a backtest. Say an asset spends about half its time in uptrends and half in downtrends. A long-only trader is sitting out, or worse, sitting through, every one of those downtrends.
In 2022, BTC fell roughly 64% over the year. A long-only account had three choices: hold and sit through the damage, sell and wait in cash, or keep buying dips that kept dipping. Every one of those is a decision made under stress, which is the worst place to make decisions.
A system that can go short has a fourth option. It treats the drop as a trade instead of a punishment. It doesn't need to be right every time. It just needs a rule for when the trend has turned, and the nerve of a rule that doesn't care how it feels.
Funding costs and fees matter here too. Shorting on perpetual futures means paying or receiving a funding rate, and that can tilt for or against you depending on the crowd. It's one more reason to test the short side with real costs before you trust it.
Why "I'll short when it's obvious" fails
I hear this a lot, and I said it myself. The trouble is that bear moves rarely feel obvious while they're happening. Rallies inside downtrends are sharp and convincing. That's exactly why shorts get stopped out and people decide they "can't short."
So the experience teaches the wrong lesson. A short stopped out by a 12% bounce inside a larger fall isn't proof that shorting doesn't work. It's proof that the position was sized as if the bounce couldn't happen.
In my experience, the traders who give up on shorting after two or three small losses were mostly sizing shorts the way they size longs, with the same stop distance and the same conviction. Shorts in volatile markets usually need smaller size or wider stops, not more courage.
A way to test your own bias
Pull up your last 30 trades. How many were shorts? If the answer is zero or two, ask yourself whether the market really offered so few downside setups, or whether you simply didn't look for them.
Then try something small. Take one rule you already trust on the long side, mirror it, and paper trade the short version for a month. Don't judge the results yet. Just notice how often you feel the urge to skip a signal that the rules clearly gave you.
That urge is the cost. It's also fixable. Once the rules are written down and the execution doesn't depend on how you feel, direction stops being a personality trait. If you want to see how a system handles both sides, the methodology and backtest data are at v33systematic.com.