As others have said, brushless motors last longer. What they didn't say is that all there is to wear out is the bearings and they are easy to replace.
Now crashing can damage anything from the shaft to the case.....but barring that, bearings....and they usually last a long time.
Besides that, you can find brushless motors and esc'c CHEAPER than brushed motors and esc's now.
No need to change out a perfectly working brushed motor, but no reason to purchase another one either.