Yes. I hate to admit it, but every person needs contact with another human being. If you landed on a lonely island with no Internet access, you would go crazy very quickly. I also love solitude and rarely go out, but I know that my brain needs contact. Nowadays, we have the Internet, which to some extent replaces physical contact with another person. I guess that there are many lonely people on this website who have no one to talk to and their only chance for deeper contact is to use the Internet. Isolation certainly causes changes that are not necessarily positive. After some time, for example, social phobia may appear. I notice from myself that it is more difficult for me to communicate with other people. I'm not a savage yet, but I can see changes.
Physical contact is important for mental health.