To most people it is a gross misuse of money …
Who the **** cares what ‘most people’ think? Your money is yours to spend as you wish. Of course if you really want to see gross misuse of money look towards the government rather than private individuals. At least individuals are ‘misusing’ their own money rather than ours.
Luckily we don’t live in a communist state where everyone is equal, though some more equal than others, so we as individuals get to choose what we spend our money on and more importantly, how we earn it.
Some people I work with think that spending over £100 on a mountain bike is stupid.