They have already told you, it is the bitcoinn, the alts are not safe, if you want something secure you can venture to buy rq bticoin, because it is the most secure it gives, for now for a lifetime, the rest you still have to complicate and possibly lose money Well, buy an alt because it is what we do to make our lives easier that alts make money? Yes, they give it, but just as they give it, they are the most unsafe there is, if you want security, buy bitcoin, there is no loss there, buy the amount you want, because in a while, because you don't know when, it will go up a lot, and if you buy Now you will have more beneficial earnings because if it rises to more than 100 thousand USD you will be grateful.
There is no doubt that bitcoin is a better choice because as stronger the bitcoin is no altcoin become so stronger ever. In my opinion no other coin can be more moneymaking than bitcoin so if we choose altcoins then some of these are also moneymaking but in comparison bitcoin will always win. In term of trust and existence bitcoin is more valuable whereas altcoins existence has no guarantee.
Altcoins can sometimes give huge profit but as there is a doubt about its existence so its huge profit is neglected because they can easily disappear in a day. Buying bitcoin will be profitable now as present worth can determine your profit during halving.