I can give you a hundred or more reasons to get a pre-purchase inspection on a used vehicle. Now if it's new and I mean no previous owner and no mileage new then of course you don't need one, but if you are not the first owner, and it's ever been used as a loaner vehicle or rented out - PLEASE get an inspection. Those are the first vehicles that get abuse. The low mileage lease returns are another example, many of those haven't been maintained properly and you will end up with not only a payment but a list of maintenance that needs to be done too.
Getting a new car or a new to you car should be fun and not stressful. The cost of an inspection can save you thousands and give you piece of mind.