Using wallet depends on what we need, there are coins that are not compatible into other platforms it will depend on what platform our coin needs. May it be for ethereum, waves, eos and a lot more. We must check the wallet security and legitimacy.
you're right, we use something with our needs. but, until now, the most frequent and most important wallets I use are blockchain, and also Myetherwallet. well, i like collecting altcoins that have eth platforms, so MEW is a recommendation for me.