We all have different reasons for coming to the synagogue; some do it for a holy, quiet moment, others to socialize, still others to remember loved ones who have departed.
In my estimation, a great reason to come to synagogue for services is found in the Ashrei prayer, recited three times daily (Psalm 145:18):
קָרוֹב ה', לְכָל-קֹרְאָיו - לְכֹל אֲשֶׁר יִקְרָאֻהוּ בֶאֱמֶת.
Qarov Adonai lekhol qore'av, lekhol asher yiqra'uhu ve'emet.
God is near to all who call; to all who call to God in truth.
We gather for services because it is a chance to be near to God, an opportunity to approach holiness. Something unique happens when we gather in a minyan (quorum of 10 people) together, but also when we call on God together; that something is the nearness of God's presence. Join us.