I have a venerable 2010 MBP that I'm considering replacing in the near future, but (as you mention) the new hardware is not compelling. The thing I can't figure

I have a venerable 2010 MBP that I'm considering replacing in the near future, but (as you mention) the new hardware is not compelling. The thing I can't figure out is whether or not my gripes are legitimate, or if I'm losing brain plasticity (i.e. getting old).