Nellie for some people it is and it is a reasonable question to ask people to consider and possibly reject.
I think we concentrate too much on friendship between individuals, rather than the company of the group.
I have a long standing hobby. I have belonged to the local society for over 35 years, I am on the committee and have chaired the organisation. I am on happy terms with many of my colleagues who have been with the society as long as I have, they are my friends, but I do not socialise with them, do not see them from one meeting to another, although we do stay in contact discussing society business. I do not meet them for coffee or discuss personal issues. But they form a friendship group. If I died, all would try to come to my funeral.
I have recently, through GN, made a personal friend, but that was the result of a person to person contact and finding we lived very close to each other and have shared interests. She is the first personal friend I have made in 30 years.
So much is made of personal friendships and advertising and the media make a lot of it and groups of friends getting together, but for many of us our friendship groups are people we work with, or do an activity with, not necessarily intimate personal friends.
Some people have a gift of friendship, DS and wife are verys ociable and have a wide friendship circle, the kind you see in adverts, but DD, by choice, lives alone and is self contained. She finds the constant presence of other people in her life overwhelming. She has a handful of long-term close friends, but mainly, like me she is part of friendship groups at work and the sports centre and other places she goes, her personal friends are few and longstanding.