To me, luxury and comfort are two separate things. Comfort is not having to worry about the things that you need. Luxury is having things that you don't need. Comfort is having one or two new reliable and safe cars for your family. Luxury is also having that convertible sports-car for the weekends.
It's context dependant too. My 2003 Accord is a luxury, despite being far less nice and older than what I could afford, because I really have no need for it. Everything I need is within easy walking or transit distance, so even that car is a luxury for me.
It's context dependant too. My 2003 Accord is a luxury, despite being far less nice and older than what I could afford, because I really have no need for it. Everything I need is within easy walking or transit distance, so even that car is a luxury for me.