Both from personal experience and from reading the gospels, I find that when Jesus Christ REALLY makes a difference in people’s lives, freeing them from both the penalty of sin and from the power of sin, sharing the gospel becomes a none issue.

In short, we don’t share the gospel because we don’t believe it matters and we don’t believe it matters because it hasn’t mattered all that much to us and it doesn’t matter all that much to us either because 1) we really aren’t saved or 2) we don’t fully understand all that the gospel does.

The excuses are just our way of protecting ourselves so we don’t see this fundamental problem.

I don’t know of one, single Calvinist who believes such silliness, and that is what this is, silly and wrong.

To attempt to muster or generate an affection by which we become motivated is a common error, so also is it erroneous to attempt to inflate some existing empathy. Abandon these as powerless and carnal. The love that motivates us is not an emotion, but a Person. When we are humbled in obedience before the will if our Lord, we walk in (His) love, and the burden of evangelism, being His, is easy and light.

The problem we have is not a lack of affection, it is a lack of repentance, or said another way, our problem is that our flesh has no interest in the salvation of others, except in cases where it would benefit us personally, and we are inclined by our rebellion against the rule of Christ (I.e. our sin) to obey ourselves rather than to accept the rule of Christ in the matter.