Sin have consequences. You can not sin and be a Christian. One of my Sisters in Christ contacted me about this statement so I am going to clarify what this means. I never want to misdirect or misinterpret. I am a messenger and can only point you to Jesus and the Word. Study to show yourself approved.
1 Corinthians 6:9-20 NLT
Don't you know that those who do wrong will have no share in the Kingdom of God? Don't fool yourselves. Those who indulge (practice) in sexual sin, who are idols worshipers, adulterers, male prostitutes, homosexual, thieves, greedy people, drunkards, abusers, and swindlers - none of these will have a share in the Kingdom of God. Paul goes on to teach that those who have been washed, those that have turned away from sin, set themselves apart for God thus having a part in the Kingdom.
Jesus taught this in Matthew 7:21-28
Galatians 5:19-26 also reminds us. I do encourage you to read the complete chapters.
The clear point I want to make is yes, we can be a Christian and sin because we as God's children will be visited by the Holy Spirit who will prick our hearts thus causing us to repent and turn away from that sin, we confess our sin to Him and ask for forgiveness which we receive, even before we ask. This does not relate to those who habitually and continually sin by the constant disobedience, rejecting if you will God's commandments.
The key here is the sins many continually practice. The knowing sin as if it is hidden from God, which can not be because God sees, hears, and knows all. Asking for forgiveness for that sin but knowingly going back and committing the sin again and again and again. Do you see the point?
In closing. God wants nothing more than to forgive and bless you. We have all fell short and will continue to fall short in many ways and that is why we must always make changes in our lives to remove any possibility of sin that can cause us to fall even further. Will we be perfectly free from sin, no. This is why the Word of God says meditate and pray, do not be unequally yoked and many more "dos" and"do nots".
Disobeying God is never a good thing because there will be consequences even though there will always be forgiveness.