When in my dream state I seem to be able to recall things from my actual life, but only those things that made a big impact. Certain minor events don't seem to generally crossover.

I have never actually tried to use my LDs as a method to remember earlier dreams. I know that it seems easier to remember my real life when LDing though. This leads me to believe that LDing is a lot closer to actual consciousness than dreaming. It could very well act as a link between the two.

However, if it is true that LDs are very close to actual consciousness, maybe even the same state essentially, then it might also act as an argument against the idea of us having more LDs than we believe. It might be possible that what we get is actually all we have. That does not necessarily mean we will just remember because it is also possible that it gets mixed up among the other dreams we had (which we don’t entirely remember). If this is the case, then the focus would be to recognize it vice try to remember it.

Personally, I think we do forget some LDs because the level of lucidity does vary. Lucid lows are far more forgettable than lucid highs. If you have a lucid high, I think you will remember it. I have a friend that practices this with me and he says that if the event is of big enough importance, he will remember. To some degree, I think this is true.