Several things...hugging my loved ones, eating at restaurants, knowing that my daughter's school would be open when it's supposed to and there's nothing to worry about with her going there, being able to call in sick without going to get tested and being quarantined...and as a professional in a professional work environment, I really miss shaking hands with people. In the world I grew up in, coming up as a respectable man meant a firm handshake was required...men judge each other by their handshake (seriously, this is a thing) and not being able to shake hands with peers/friends/clients/etc. is actually a real bummer to me.