Just as we like another person's company so does Jesus like ours. He is not indifferent to our presence even though we, unfortunately, are sometimes indifferent to His. Jesus is not present Body, Blood, Soul and Divinity everywhere as He is in the Holy Eucharist. Of course God is present to us everywhere. He continues His Presence in our tabernacles out of love for us.
Some people remain at home on Sundays claiming they can just as well pray at home.
The Catechism reminds us that this is not true. Praying in the home has never been understood this way even from earliest times. Early Christians gathered on Sunday to celebrate the Eucharist as a community. They knew something was wrong if someone absented themselves from the Sunday Eucharist. Certainly Jesus gathered with His Apostles for communal prayer.