Romans 6:15-16
What then? Shall we sin because we are not under law but under grace? Certainly not!
Do you not know that to whom you present yourselves slaves to obey, you are that one’s slaves whom you obey, whether of sin leading to death, or of obedience leading to righteousness?

Again, Paul asks the question and gives the correct answer.
The issue here is the definition of sin.
You can easily say any action, thought, or word against the righteous standard of God.
However, many redefine sin to fit into their definition of God’s righteous standard.
For instance, fornication is sin and Paul over and over says to avoid it.
So let’s define fornication.
Merriam-Webster defines it as consensual sexual intercourse between a man and especially single woman who are not married to each other.
Basically, the definition is a sexual relationship between two unmarried people.
I know some people that justify fornication by saying it’s okay if the couple truly love each other.
That isn’t according to God’s word and His righteous standard.
It is a rewriting His word. (What does the Bible say about adding to or taking away from His word?)
Those that change the word and God’s standard, for whatever reason, do it for the lust of their own flesh because they are still slaves of the flesh.
It is something everyone, including me, struggle with, not matter what the sin is.
I call it the “okey dokey” sin.
Well, it isn’t okey dokey with God.
It’s just sin.