New vs Old

Hello everyone, hope you all are having a fantastic day.

So recently I got promoted at work and I have moved into a career, I like to think of it as one at least. So with said promotion came a nice increase in pay. So as a gear head I naturally start thinking about all the parts I get to buy, until recently I have been thinking about getting a new car. My daily is doing fine for now but it is going on 14 years old. Naturally I want something that has horsepower and looks good. (Scat packs) But is that not being a responsible adult?

So my question for you folks is put money into my duster or dart?
Or look into get something newer and more practical to drive?

Thanks folks!