(1) It shows respect for the best day of the week – the Lord’s Day, the day on which Jesus rose from the dead.
(2) It is a great step toward spiritual growth and Christ-likeness.
(3) It makes you a covenant keeper in your commitment to God and to the local church where you are a member.
(4) It demonstrates your strong support for the future of your church.
(5) It is an excellent example and witness to unbelievers when they see your consistency in church attendance.
(6) It is an encouragement to others in the body when they see how changed and energized you are through Christ and fellowship in His body.
(7) It is an encouragement to the leaders and workers in the church who serve you.
(8) It encourages and pleases God the Holy Spirit who has equipped us to serve in His church.
(9) It provides hope and strength to press on for Christ throughout the week.
(10) It shows a spirit of submission and obedience to God.
(11) It shows love and affection for God by wanting to spend the first day of the week with Him.
(12) It makes the family of God more effective and complete when all the members of the family are present.
(Not to mention all the Biblical references to giving, hearing the preaching of the Word, baptism, participating in the ordinances of baptism and the Lord’s Supper, fellowship, using your spiritual gifts, making disciples, etc.)
Also this is perhaps one of the best reasons I’ve heard from Dr. Paul Tripp: “Why should you go to church this morning? Because corporate worship is designed to counteract the false gospels you hear every day with the true gospel of the Lord Jesus Christ.”
LifeCoach4God 
I went to church when I was younger, but I haven’t been back in years. I’ve been wondering if I should start attending a church again so I like how you point out the benefits of attending church. I especially think that if I start attending church services again, I’ll be provided with more hope and strength like you mentioned.
Hello Kate,
Honestly I don’t know how people get by in life without encouragement, prayer, and accountability from brothers and sisters in Christ. I hope and pray that you can find a church near you that is biblical, gracious, and Christ-centered – where you can grow in your faith and contribute to others as they contribute to you as well. Grace to you, Pastor David Craig