We've had our own modem for as long as we've had cable. DH always researches stuff like this ad nauseum. He is always searching to get a good deal for the stuff we need and want. I truly do not have the patience. My Mac laptop is 6 years old and just fine and so is my IPhone 5s. Those things don't matter to me that much; it's more the household stuff. If I had to buy a laptop for work, though, I would probably have a different attitude. DH's laptop from his new job is horrible, so he generally figures out how to get all of the stuff on his Mac and uses that at home.
I kept my last car for 10 years and the one before for 6; I sold that one to a get a smaller car. I hate my car now, but since I only drive 2 miles to work, I keep it. It's 5 years old. There's nothing wrong with it, but it is longer than I wanted and I made a bad decision. Problem is, I now have to consider things like easy maintenance and warranty when I buy the next one, as we will most likely be near full retirement. DH bought the only less expensive SUV/crossover I would consider (a Rav4), so I hope that other companies come out with cooler looking, similar cars. I think Hondas look like old people's cars. I will never buy a Suburu, so I am hoping Toyota or Hyundai comes out with something else.
I generally dislike all the technology change... if my DH dies before me, I will have serious issues running my home. Everything is automated and I can never remember how to use the stuff. He likes doing this stuff and I avoid it like the plague. My parents were like me, my dad included, so I guess I had bad role models.