Enjoying timepieces are for those who enjoy and understand horology. Love the dials, movement, case design and history of particular models or design. So, as for me, collecting and enjoying it for more to personal taste. Not collecting for next generation.
However, sometimes these hobbies do "spill over" to the kids. These kids will learn unintentionally from their fathers. And, they will start to have their own collection (May be cheap quartz) at the beginning.
Later, when they understand about the values of these pieces, maybe you can pass some or all of your collections to them.
Anyway, purpose of collecting is for the collectors to enjoy and appreciate these timepieces.