A vehicle as an investment is only a good asset if the revenue generated is more than the monthly payment and insurance and Maintenance.B/c for some people, it's an INVESTMENT...a way to make revenue. You and I may not agree with it being sound, but if it's bringing in income (when the vehicle isn't stolen of course), who are we to judge?
If you have factored in all those and it generates more than 25% above its revenue if not its pocket money at a risk. Also dont forget vehicle depreciation which is a big factor and net book value of the vehicle. And the tax on the low generated revenue.
So if you have done the proper homework then yes if not. Your taking a lost and no gain. Your only seeing the NOW and not the long term benefits. Just an eye opener. Enjoy