well you can keep your computer updated manually. you know computers, the most useful tool,entertainment,researcher,contacter,shopper, cant live in todays world without one appliance.
or be a tard and let it go to stuff and buy a whole new one at bulk full price like a diphole every 2 years
your mom sounds like the type that expects you to care for her when shes old. because a whole lifetime preparing for retirement is to much work for the last gen. so they huff off advice to you about money, based on their own failings, that are now outdated and no longer apply to this year.
summed up: who the forget is she to decide its "a waste" of money. just because she has her own separate responsibilities and dept that don't apply to you
