After 230,000 miles I sold my '03 to next door neighbor, bought it two years old >40,000 miles every possible option, about $30K. Only used the back seat DVD player about twice. Loved it!
Just purchased a '13 with everything except the lane departure/intelligent braking option; it has the 20" wheels quilted seats, nav, you know...29,000 miles, certified, $32K. Like New, not even a parking lot door ding. Hell, who can tell a 2013 from a 2017, that's not already an Infiniti owner anyway?
Long story short, unless you have more money than you need, get a nice year or two old one, preferably certified, and save $20K. They're out there, and unfortunately or, fortunately these vehicles although they haven't changed much in 8 years, take a beating on depreciation. You can either take advantage of the situation, pay cash, or likely be "Upside down," in your Infiniti as soon as you drive it off the dealership if it's financed.
Most are driven by financially responsible adults, I mean, who gets one of these for their 16 year old?