Am I understanding you (in all of the dialog with me, not just this post, necessarily) that while works are not required for salvation, Christians will do good works, because they are Christians?
There are two kinds of works...
Those that God has done and is doing in you.
For example, these would include:
He has cleansed you from all unrighteousness. He has made you holy, righteous, blameless. He has sanctified you (set you apart from the law of sin and death, and unto Himself where there is life and peace). He has set you free from the Law, from wrath, from sin, and from death. He has given you His Spirit; His very life. We are sons of the living God; Saints! You are complete in Him; Perpetually perfected. He is now renewing our minds with the truth of who we are in Christ. God is working in our hearts to know all those things that He has freely given us in Him. Through His Spirit He pours out His fruit in our hearts. We receive ALL of His love, joy, peace, kindness, gentleness, goodness, patience. He is faithful towards us. He is in control of who He is, and who we are in Him.
Those are some of the good works that God has done and is doing that accompany our salvation. They have nothing to do with anything we have done or will do. They are His works, and we just walk in them.
Now, there are good works that we may do in this life that accompany what God has done and is doing in us, but they are no one's business but God's, and the person with whom God is at work.
For the most part, what I see being done, is that legalistic Christians who "say" that they are no longer under the Law (and some who say they are), are looking at one another's behavior to see if it lines up with the Law and if not they say they have no fruit. They are also demanding that people love perfectly, or are perfectly patient, or kind, etc. It is far more stringent than the Law that God gave to Moses and an even heavier yoke on people's backs to perform at this new standard. They demand it of others, without seeing that they themselves fall short.
If you decide to go to the mission field, it makes your work no better or worse than the guy who goes to work making pizzas. How and where God works in men is his business. If a brother gets drunk and thrown in jail, it makes you no better or worse than if you are the brother who leads worship at church on Sunday. It's far more unprofitable for the guy who got drunk, but God is the one who is at work in both. It's none of your business, unless he is the guy who plays the organ while you lead worship, then it is a matter of responsibilty between him and you, but not between him and God. Those who are in Christ are all on the same level with God.