I saw a lot of people who have little knowledge about cryptocurrencies and some of them only know bitcoin through cryptos. Basically, these people, even if they invest, buy and keep some bitcoins and do not go to altcoins at all, and sometimes these people (who is a friend of mine like this) have a lot of capital and their capital is not comparable to altcoin holders at all. .
For this reason, the most important thing to consider is the security of the wallet, and in my opinion, wallets that support many currencies are not suitable for these people.
electrum wallet only supports bitcoin but its security is very high. Its simple software design gives us a sense of security and we see a very light software.
Also, electrum wallet users can keep their private bitcoin keys on paper, which keeps them in cold storage without any security problems.