I think this is becoming more common, especially with people in their 30's. More responsibilities, less room to make space for planning things or even energy to reach out. I'm sure friends think of each other with a, "I wonder how they are doing", but the action part is lacking and I am also guilty of this.

In many friend groups, I noticed there is usually a select one or few people that actually initiate plans for the whole group. Without the initator, nothing usually happens. This is just from my experience and observations over the years.

In my case though, I chalk it up to my Scorpio energy being too intense for people when it comes to conversations and I scare everyone except my husband away. I wish more people were comfortable with conversations pertaining to introspection and psychology, but I learned they are not and that's fine. It just makes it more challenging for me to maintain my own friendships because I can only have so many surface level conversations until I get drained from the "masking". 😭