Why are there so many fake Christians?

Q:  So tired of finding out so many people are fake “Christians” I keep coming across them in my life. I don’t want to waste my time on them!

A: Assuming you are not talking about those in cults and religions masqurading as Christian, but talking of those in protestantism. 

Instead of being upset we should have a loving attitude and concern for them. Pray for them, and try to reroute them to salvation or righteous living. We arent perfect. We are all hypocrites.

Theres ways we can reach churchgoers both those who are babes in Christ and false converts.

A lot of times people who are new or weak in the faith have not matured or grown and stagnate. They dont read Scripture and so they quench the Spirit (1 Thessalonians 5:19). Thus they dont know how to live well in righteousness and they arent growing. And it leads to a sinful life. Pray God leads them out of that and back on the righteous path. Help them how you can. 

We need to be gracious towards these people because likely they have not understood the real gospel yet which means theyre unsaved. They have some Christian background so that is good. Use it. Probe.

An idea is to engage and ask their salvation testimony. If it lacks the Gospel, radical transformation and growth after salvation you can lead them to truth.

*Ask them to share with you how to be saved. >Ask how God's holiness factors in. How mans sin. And Jesus.
* Share info on false gospel vs true gospel info such as this free pdf book. Many embraced a false gospel. 
* Share self examination resources like this one.

*Ask if they want to ensure theyre really going to Heaven.

*Ask if theyre a good person. If they say yes, show this 

Also, address problems when professing believers are not living rightly. We need to lovingly come along side and address the issues with the goal of their being right with God (as in repentance & growth), and if they refuse we need to begin church discipline procedures with/thru their church.  If theyre regularly in your life [for however they are] if need be (at some point) - treat them as an unbeliever and not fellowship with them; until they really repent and seek to restore fellowship.