Spot: you own the coin
On spot you buy the asset at the current price and hold it. There's no leverage, no liquidation, no funding and no expiry. Your maximum loss is what you put in — price can't go below zero.
That makes spot simpler and lower-risk, and it's the natural fit for accumulating and holding over a longer horizon.
Futures: a contract on the price
Futures (usually perpetuals in crypto) let you trade a contract on the price with leverage — you don't own the coin. Leverage amplifies both gains and losses, you can be liquidated if price moves against you, and perpetuals charge a periodic funding fee.
In exchange you get capital efficiency and the ability to go long OR short (profit from falls, or hedge). The trade-off is materially higher risk.
Which should you use?
Spot suits longer-horizon holding and accumulation with lower risk. Futures suit short-term directional trades, shorting and hedging — but only with strict risk management: a defined stop, low leverage and proper position sizing.
Most blow-ups come from treating futures like spot — sizing big and 'holding' a leveraged position through a drawdown until it liquidates.