More good than any harm IMHO.
Many many tasks, especially complex and redundant ones, can be quickly achieved by computers than is possible without.
This translates into savings on time, labour cost and from errors that are more possible without computers.
Taking example from where I used to work (Lexmark distribution centre and warehouse), we process orders, invoices and
past orders using computers (networked to a central server in a separate location). Without computers, we would need to
hire more people to work on the orders, and yet more to track any discrepancies caused by human errors. Actually, errors
wil definitely occur since we process hundreds of thousands of orders. No human mind and even the conventional filing
cabinets can cope with that kind of volume.
In short, computers are inherently beneficial to us. It is strictly a tool. How you use it is up to you and if it is
ever "harmful", perhaps the user is not qualified to be using them in the first place?
Regards.