When the market is good, many people come to me asking for a recommendation for a spot that can be held for a few years.

If by "long-term" you mean just 3-4 years, then I suggest you don't touch any coins now and wait to buy during the bear market, which would be more appropriate. Because 3-4 years is actually just a bull-bear cycle and not considered truly long-term.
But if you treat cryptocurrency as an asset to allocate, planning to hold it long-term like gold and sell a portion when you need money, then it truly falls under "long-term holding". In this case, I only recommend buying BTC and not touching other coins.
The logic is very simple: coins like BNB, SOL, ETH, DOGE, XRP, ADA, and SOL are definitely considered good coins, as they can rank among the top ten by market capitalization for two consecutive cycles. This is the result of market and capital voting, so they shouldn't perform poorly. But the problem is, when faced with a long period of decline or bottom consolidation, can you hold on? The reality is, most people cannot hold on. During the last cycle when ETH fell to its lowest point, how many people said it had no hope? As a result, many sold off. It's not that ETH has a problem, but their "consensus" is too weak and easily pierced by market sentiment.
In contrast, BTC is completely different. Although many people complain about its high price and small increase, no one in the circle would truly deny the value of BTC. Because it has no fundamental flaws, the only "disadvantage" is that it is too expensive. In my opinion, this is precisely an advantage; BTC is meant for wealthy individuals to allocate.
So, the conclusion is very clear: if you have a short-term mindset, don't buy now for a 3-4 year cycle; if you truly want to hold assets for the long term, then just buying BTC is enough. If you can hold BTC, you can make money; if you can't even hold BTC, there's no need to consider other coins.