If only I desired to spend the energy on picking apart every one of your sentences with critical precision.
Look what you say here... Just look.
"If what you say is true about salvation by faith alone...then people can sin all they want and be saved without loving God! Therefore, these people are selfish!"
How did you jump to that conclusion? They can...so they will? Sounds like you believe people don't have the ability to be...good... Hmm. Who says these people want to sin? Are you projecting? Do you want to sin? Would you be sinning if you believed you could get away with it?
First, again, this is not my first discussion involving Free Grace Christians. I have been talking with them online since 2011 and not one of them believes in doing good at all times as Psalms 106:3 says. While many of them will say they believe in doing righteousness, they also believe in sinning on occasion because they have a sinful nature that they cannot escape from. Yet, this runs contrary to verses like 1 Peter 4:1-2, 2 Corinthians 7:1, and Galatians 5:24.
Second, if the penalty for speeding on the highway was removed and a person can just do whatever speed they like without any tickets from the police, or court problems, or without any danger of harming others, then more people would speed because there are no bad consequences to speeding (even if there was a speed limit sign). More people would speed if they knew no bad consequences would happen as a result of their speeding. They would think the speed limit law does not make any sense because there are no bad consequences to breaking such a law. It's the same with Free Gracers. While they may say they will not treat sin lightly, and they want to obey God, I know that it is human nature for them to just be lazy and do whatever they like or what is convenient for them. There is no real dire need to do good if it is merely optional and does not serve one's best interests. Jesus says to deny yourself and to pick up your cross and follow Him. Most Christians do not believe in doing that. It's all about being saved by a belief alone on Jesus and basking in their imaginary version grace.