We don't have a computer. Are we missing out?

Every week a Guardian Money reader submits a question, and it's up to you to help him or her out – a selection of the best answers will appear in next Saturday's paper. This week's question: Are we alone in wondering whether we're missing out by not having a computer? We are a healthy couple (75 and 86), who are active in the local community and use our nearby library extensively. We buy tickets, holidays etc by phone. Our children say we need one – do we? What are your thoughts?