To answer the OP... I suppose it is no different than when we sin... sometimes willfully... it doesn't make sense and appears to be the plague of self... if one has a self, one is tempted to elevate one's self above God and / or his wishes and we sin regardless the consequences or we reason ourselves out of any severe consequences (elevating also our own judgment over God's).
Yet we all do it.
Sometimes when God is trying to make a point (like when Moses was supposed to speak to the Rock for water but struck it the second time) consequences can be more than we even think possible at the time. Moses did not lead the children of Israel into the Promised land. This was prophetic in that the Law of Moses could not save. But the one following Moses (the Law of Moses) Joshua (another form of the name Jesus) did lead the people into the (ultimate) promised land.
The entire nation of Israel was to God a kingdom of priests (Exodus 19:6) until Exodus 32. And the one tribe that came to Moses' aid was made the priestly tribe.
The Sanhedrin (Jewish leadership) was supposed to laud the Messiah. Rather they opposed him and tried to kill him and were his judges in their kangaroo court trial turning him over to the Gentiles to carry out their sentence. It would have been better that they had not been born.
Look at us, intimidated by the world, too scared to witness Christ to a lost and dying world... Ezekiel 33 and 34 are a scary read about such behavior.
And by the way, the angels believe because they have seen (spirit beings can see spirit beings as we read in the account of the Rich man and Lazarus Luke 16:19-31 after both die all in the passage are disembodied spirit beings).
Angels are also in their eternal state. Sin once in that state and there is no redemption from the soul that sins shall surely die.
We are hybrids (spirit and body with a buffer the soul). Because we can die in some way (our bodies) we can be redeemed, but only after the Creator himself became our kinsman and paid the sin price for all mankind.
Angels have no kinsman redeemer because they cannot be redeemed.
So as painful and ugly and final as death is, we benefit from it than we are able to die and the Law of God is unbroken.
1 John 1:5-10 (KJV)
5 This then is the message which we have heard of him, and declare unto you, that God is light, and in him is no darkness at all.
6 If we say that we have fellowship with him, and walk in darkness, we lie, and do not the truth:
7 But if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin.
8 If we say that we have no sin, we deceive ourselves, and the truth is not in us.
9 If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.
10 If we say that we have not sinned, we make him a liar, and his word is not in us.
1 John 2:1-6 (KJV)
1 My little children, these things write I unto you, that ye sin not. And if any man sin, we have an advocate with the Father, Jesus Christ the righteous:
2 And he is the propitiation for our sins: and not for ours only, but also for the sins of the whole world.
3 And hereby we do know that we know him, if we keep his commandments.
4 He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.
5 But whoso keepeth his word, in him verily is the love of God perfected: hereby know we that we are in him.
6 He that saith he abideth in him ought himself also so to walk, even as he walked.