Is it bad to be reclusive and not talk to people unless spoken to?
Islam does not ask you to do more than you are able. Some people are simply more reclusive than others. If you can carry out your duties and maintain polite relationships with people then reclusiveness is not an issue. Also note that many great scholars, such as Ibn al-Jawzi, recommended staying away from most people due to their often harmful talk and gossip. He recommends staying at home to read and avoiding going to social gatherings whenever possible in order to focus on reading and learning.