If you call yourself a Christian then you must pray always, a prayer less christian is in trouble because the devil will deal with you without mercy.
Any Christian that doesn't Pray is a weak Christian and doesn't have defense, prayer backs Christians up, prayer is the shield for every christian, your ability to pray determines the level of your spirituality.
Being a Christian works hand in hand with been a prayerful person, if you don't pray you turn to a food the enemy will feast on. Being a prayerful Christian is not just what starts like that, it's the constant training of one in prayers.
If you are just claiming to be a Christian be rest assured that you can't pray, so every christian should have a 100% prayer life, you can't tell me you are a real christian when you can't pray it's not possible. A Christian should have this habit of prayer that is worth emulating because prayer is the key.