While at the same time, software that maximizes efficiency (todo apps, etc.) can cause anxiety and increase the risk of mindlessly checking off todo items without considering their value (I've experienced this), and games and social media can provide lasting, valuable experiences and friendships.
The computer is a neutral tool that can make good things better and bad things worse. Because still a relatively new invention, and undergoing constant, rapid change in how it affects culture and individual behavior (pocket computers! VR! etc!), we haven't quite figured out how to distinguish the two.
In some cases this means that we unexpectedly find a wonderful application that improves countless lives, and in some cases it means that we discover ways in which the use of a computer can affect us or society negatively.
Personally, I am generally in favor of change, in the broadest sense, even if sometimes it's bad, while paradoxically I myself don't deal well with changes. The thing I love about computers is that they are one of the biggest instruments of change, and yet in my interactions with computers they are wonderfully boring and predictable, in the end.
I have a theory that this is one aspect of computers that draws so many people like me to them. I have access to a vast world of experience, knowledge and people while using a tool that I control, usually from the comforts of my home. And using that same tool, in the same comfortable setting, I can create things that somehow affect (and ideally benefit) many people, through writing, coding, 'drawing', and most importantly the internet.
That said, of course going out into the world is still an activity that is important for happiness, at least for most people. But the fact that I live in a time where I can create, learn, consume, bond, and so on, with this one tool and an internet connection is something I'm very thankful for.