We may be inclined to think about other coins, but in the end, BTC would be the main coin to hodl and watch for.
Simply due to the value and acknowledgment BTC gains now because of the ideas it upholds.
If you are considered other than Bitcoin, you can get a profit from that coin after a certain time after investing. But if you are holding a bitcoin, then you will benefit from that Bitcoin in the future. According to Bitcoin's popularity and acknowledgement, its value is gradually increasing in the future, which is reduced instead of increasing in other coins.
I may say that it is only a set of people that don't understand Bitcoin who will say that Bitcoin is so expensive and it is too late to buy now. Many people have been saying that for some years and refused to buy it from them, but now they are regretting it because Bitcoin has increased in price even more than their expectations. Those who bought it from them are now in profit. In fact, I will say that those set of people complaining that Bitcoin is expensive are the set of people looking for quick money in the crypto industry, and they are the set of people that do end up in scam projects because their aim making it quickly is higher and they never give themselves time to learn things about Bitcoin and other alternative coins. If not, in comparison, it is clear that Bitcoin is the best, and it can never be too late to buy Bitcoin.