Interface wise ,would you prefer typing on a small device which can barely fit your thumb or a computer which would give you a better view of the keys being typed ? Touch screen can stop working,break on dropping the device on the floor,become unresponsive.Are you considering these negatives ?
I'm not saying computers don't hang but the recovery time would be much faster than trezor.Anyway,it's subjective.
I don't give a runny shit about the ergonomics if it increases security. Nor should anyone else. We're not talking armchairs or phones. We're talking large amounts of money. Protecting that takes the priority over any other factor by a country mile.
Sounds like your all action lifestyle is not a fit for this. There are plenty of other options.