Prayer is the way that we communicate our needs to our Heavenly Father. It is the means through which we offer up the sacrifice of praise and thanksgiving. It is the way in which we seek His council and guidance for our lives. Pray is essential to the believer. So, everyone should pray.
Prayer is a time of fellowship with our Heavenly Father. We should make time everyday to spend time with the Father in prayer and fellowship. It is not always necessary to ask God for something. It is important that we also spend time thanking Him, praising Him, and just being with Him.