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Do we need multiple crypto wallets in the future, and how many multi blockchain crypto wallets do you use today?
We cannot stop the development of cryptocurrency, this is because cryptocurrency has a decentralized nature, so as long as it is useful we can use what other people do, like the number of wallets that appear, it's just that you have to be careful, because not a few wallets end up being a scam.
I personally only use a few wallets, but soon I'm planning to buy an offline wallet like the Trezor, because it's more secure than an online wallet.