Given that XP stops getting security patches in April and will then be even more of a problem in terms of botnets , not to mention a security issue for anyone using it , I think a strong case can be made that no, it's not better to give people modern evolving anything on XP.
They should feel like they are living in the dark ages, devoid of modern luxuries and subject to the whim of any thug that comes along ... because they are or soon will be.
I guess we'll just agree to disagree. A non-zero percentage of people will be stuck on XP because they don't know better or don't own the machine. I would much rather have those people use Chrome than IE8. They are far less likely to become part of a botnet if they have a modern browser.
They should feel like they are living in the dark ages, devoid of modern luxuries and subject to the whim of any thug that comes along ... because they are or soon will be.