There are a couple of things here:

2.0 D segment cars do 0-60 in around 9 seconds. It's not fast and it won't do much for you on a race track but it's fast enough for normal people driving to work etc. When I leave my condo in the morning, I don't floor the accelerator and push the red line all the way to the office.

The current Accord has been on sale since 2008 with various faces. The model for 2018 will be all new. There is really no point in buying a car at the end of its product life cycle regardless of the discounts offered.

The majority of Accord, Camry and Teena are driven by middle-age or past middle age men because they have the means to buy them. However they should not be considered "uncle cars". If you are young and you drive one of these cars will people consider you an "uncle"? No, people will respect you as having the means to afford a D-segment car at a young age. Fetch your gf in them and you will impress your future mom-in-law far more than driving up in a Honda HRV. She's not going to think you are too "uncle" for her daughter just because you drive a car which is usually driven by people older than you.

On another note the term "uncle" is usually used in a slightly derogatory way nowadays to indicate an older and old-fashioned person who you would not want to associate with. It's not a good feeling to be called uncle nowadays (sigh).