We had our massive clutter clear-out three years age when we down-sized prior
to moving into our 'retirement apartment'. I don't think we have missed anything.
We kept all items relating to our various hobbies, and those that we particularly
liked because they had special memories attached to them.
We don't gather clutter now as we just have nowhere to keep it.
It is a fact that if you have space to spare you will find something to fill it.