My husband has never had pre-***. We were wondering what the pros and cons were of him not having any.

Makes no difference either way.

It's not possible not to, it's most likely that it has never been noticed or has never reached the outer glans of the penis.

Pre-ejaculation is the early seminal fluid that lubricates the urethra prior to ejactulation. It's just possible that the pre-ejaculated was never released outside of the penis itself.

It makes no difference whether this is released from the penis.