Hi Philman61,
Welcome Home!
I am very happy to hear that you have felt quite welcomed to the Catholic Church.
You are right - There is absolutely nothing wrong with welcoming and showing our love for our brothers and sisters in Christ.
However, as others have pointed out, loud, worldly “meet and greets” just before Communion can be very distracting and disruptive to communal worship.
For some people, that one hour at Mass is very precious, and may be the only time they have to fully focus on worship. If they come in early to pray and people are talking about the baseball game or the Church potluck supper, and then during the sign of peace people are talking about the long weekend, and then they stay after Mass to try to pray and adore the Blessed Sacrament and people are lingering in the pews and chatting about highschool graduation or what happened at work that week, or even poking at the person trying to pray…well, there just seems to be no time that is truly available to worship the Eucharist.
I understand the human need for fellowship, affection, and compassion from our brothers and sisters. But this is where it is very important to have some kind of regular social gathering after Mass, as well as other social activities for all age groups.
God Bless!