I think everyone will have different behavior sec for their funds, with the options now ranging from simply committing a 12 or 24 word seed phrase to memory and buying ETF shares.

There is shamir secret splitting, multisig, MPC, secure enclaves with biometerics, etc...

There will be apps like Fuse wallet: https://www.fusewallet.com/

There will be phones like Saga: https://solanamobile.com/hardware

I think how one handles their wallets will be much like how people make their espressos. Some will just stick k-cup in a machine and hit a button, others will become full-blown coffee enthusiasts that carefully measure their beans, de-static their grinds, and extract for the exact right amount of time.