The simplest answer to "Why go to church?" is another question. Are you following (or trying to follow) Jesus? If so, then go to church because He sure did. He was part of worship and singing the Psalms, sat at the table to eat fellowship sacrifices, and celebrated festivals throughout the year to retell the story of God's faithfulness. Whether or not you go to church isn't all about you: it's about God - Who He Is, what He has done. We look at Hebrews 12:18-24 as a lens to help us realize there is a great deal of wonder going on around us in worship if we simply open our eyes to it.
To investigate this most important of stories further, go here.