Gotcha. Just pointing it out 'cause a lot of people forget to factor that into their retirement planning. If I plan to retire in 25 years, then I need to account for 25 years worth of inflation in my calculations, and adjust my investment returns accordingly.
Anyway, in today's dollars, we'd probably actually expect to want to retire with a similar or even higher income to what we earn today. Retirement -- if we're healthy -- should afford us lots more time to travel and enjoy life, which costs more money than sitting at a desk all day. If we're not lucky enough to have our health, we'd want to be able to afford any necessary healthcare or caregiver expenses.