Why persist "in general", since the issue of eternal life is NOT about objects that can be discarded. You're trying to compare apples with oranges and coming up with mush.
Of course any object can be discarded. But this isn't the issue or debate at all. Not even close.
If one can show any evidence from Scripture that one's salvation, eternal life, or the new birth can be discarded, then it can be. Otherwise, the argument has NO EVIDENCE to support the assumption.
That's where the debate really is.
It's always interesting to see how many ways can be devised to topple simple belief by faith in Christ.
Drew for example is rather obsessed at the moment with God rendering to each according to his works. Drew might even see that "all" believers sin, have sin and have sinned. This much should be rather obvious to any honest observer of themselves.
Faith says sins were taken away from our account by Jesus, at His Cross, 2 Cor. 5:19 and many other citings. So there is no ILL repayment for SIN. Will our unworthy words aka SIN stand under Gods Judgments? Yes, but not to the loss of salvation:
1 Corinthians 3:
11 For other foundation can no man lay than that is laid, which is Jesus Christ.
12 Now if any man build upon this foundation gold, silver, precious stones, wood, hay, stubble;
13 Every man's work shall be made manifest: for the day shall declare it, because it shall be revealed by fire; and the fire shall try every man's work of what sort it is.
Does this judgment result in damnation in eternal hell? Of course not! Paul is very succinct about this:
14 If any man's work abide which he hath built thereupon, he shall receive a reward.
15 If any man's work shall be burned, he shall suffer loss: but he himself shall be saved; yet so as by fire.
I might presume we'll all have work that will not abide this infamous "trial by fire." And what will be lost will be worthy to be lost, burned up, forgotten, not carried forward or what have you.
And some, maybe all at some point, may forget this happened:
Ephesians 1:
12 That we should be to the praise of his glory, who first trusted in Christ.
13
In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,
14 Which is the earnest of our inheritance until the redemption of the purchased possession, unto the praise of his glory.