In all my 50 years of church involvement I have never met or heard of any brother or sister in Christ doing any of those things. Maybe you might have people like that in your neck of the woods, but never in mine!
First, we walk by faith and not by sight (2 Corinthians 5:7) (Hebrews 11:1).
For faith comes by hearing and hearing the Word of God (Romans 10:17).
We learn by the anointing of the Spirit (1 John 2:27), and not in the cleverness of men's speeches (1 Corinthians 2:4).
Second, we are living in the last days; See 2 Timothy 3:1-9. Also, Jesus asks that when He (the Son of Man) returns, will he find faith on the Earth? (See Luke 18:8).
Remember, things will be like they were in the days of Noah (Matthew 24:37).
The point of the global flood was not.... Once Saved Always Saved or a sin and still be saved type of belief (Which is an oxymoron or contradiction of Scripture or an insult to Christ's teachings), but the point of the global flood was that it was an example to all who would live ungodly thereafter.
5 "And spared not the old world, but saved Noah the eighth
person, a preacher of righteousness, bringing in the flood upon the world of the ungodly;
6 And turning the cities of Sodom and Gomorrha into ashes condemned
them with an overthrow, making
them an ensample unto those that after should live ungodly;" (2 Peter 2:5-6).
Jesus Himself said.... narrow is the way that leads unto life, and few be there that finds it (Matthew 7:14).
Remember, the Pharisees thought they knew it all their whole lives, that was until Jesus came. Jesus did not say.... "Hey look guys! Don't worry about your sins or hypocrisy, just believe in me and I will take care of that." No, no. Jesus most certainly did not say that. Jesus said that the Pharisees were hypocrites and they ignored the weightier matters of the Law like faith, love, justice, and mercy (See Luke 11:42, and Matthew 23:23). Jesus was not only getting them to repent and believe in Him but He was also trying to get them to clean up their act after they repented (or sought out forgiveness with Him).
For Jesus said He was among sinners as a Physician to heal them. This means that Jesus was among them to heal them of their sinful condition so that they would not continue to be sick as a sinner. Sin is the disease and Jesus would help them to overcome this disease. Romans 13:14 says put ye on the Lord Jesus Christ and fulfill not the lusts of the flesh.