It's so disappointing when people just make up stuff for themselves – well, that's not disappointing in itself I suppose after all people compose music they like to accompany poetry which in combination give us our hymns; no, the disappointment is when they attribute a value system to God which utterly contradicts everything He's tried to teach us.
If the values we dreamed up for ourselves were valid, why would God need to teach us anything at all? It is precisely
because of our incapacity in this respect that we have The Bible. God's message is very clear, concerning both what we should do and what happens if we do something different. There have been other criteria for living cooked up with no input from God by people who don't claim to be following The Bible which is at least consistent. They are not Christians. They say, for instance, that you will come back as a scaby or a monkey or a termite.
There is no evidence for any of this but more particularly, since no-one ever comes back as something better than human, the whole process is retrograde by its own standards (all available species are "worse" than human) as well as the standards of evolutionism (humans do not turn into monkeys) and of God.
Hebrews 9:27-28 And as it is appointed unto men once to die, but after this the judgment: so Christ was once offered to bear the sins of many; and unto them that look for him shall he appear the second time without sin unto salvation.
The Bible explains why Christ needed to be offered in the first place. What did God require that only Christ could deliver? When the standard set out by God is rejected—remember, the only place where that standard appears is in The Bible—what basis does anyone have for claiming that Salvation even exists?
Anyone not willing to trust and obey the Word of God is only pretending to be a Christian. First, obviously, you'd need to know what it said. Next you'd need to trust that Jesus was not lying and remember, without The Bible there is no evidence for any of His teachings. Thirdly, you'd need to obey what He told us to do. It's not something we could ever have thought up for ourselves but the first step is the most important. Read The Bible. Then decide.