When we talk about depending too much on computers, it is important to realise that 'too much' can mean different things for different people.
Firstly, some people's jobs rely on using a computer.
Many industries would be a lot slower and less reliable if computers didn't exist.
Computers also give people enjoyment; they can be used for games, films and research and many other things.
Using a computer can also be a social activity, though people may disagree with this.
What would be 'too much' for some people would be normal for other people and it's possible to be happy and healthy and use a computer a lot.
However, some people become very dependent on computers.
In the workplace when a computer breaks, sometimes people don't know what to do.
Using a computer to find information is also too easy; people can get lazy and not read books instead.
In addition, some people spend too much time with virtual friends online and don't know how to make friends in real life.
To sum up, there are advantages and disadvantages to using a computer a lot.
What 'too much' is can be different for each individual, but if a computer is preventing someone from having a normal healthy life, then it is too much.