Don't like that mentality at all, even younger at 36 although with three little kids so odds are that I'm a grandparent by 50+..I'm a couple years ahead of you...and yes, we could be grandparents.
However why would you buy anything new if this device still performs, the next step as I see it if you want any kind of performance is going to pfSense with more potent hardware and just running APs.
Right now that is a waste of money and environmental resources and I will never accept a company gimping their hardware with something similar to planned obsolescence.
Will run my USB-modded 120mm fan and RT AC68u til the latter literally dies.
I have no reason to upgrade until I go past a 1Gbit internet connection which is what I currently am on with approx 40 clients (many very idle ones ofc).