Vince gave a good answer
In a way that is the reason I am going to get a Threadripper. I deal with Bathymetry data, which can involve point clouds with hundreds of million of points. Manipulating this data, like creating surfaces, take up a lot of ram. 16GB of my 32GB of ram has failed a couple of months ago and having having only 16GB hurts. Realistically, I will probably end up with 32GB and then 64GB and it should be enough.
If I could have afforded 128 over my 64 you can be damn sure I would have. - More fast ram is just better than less, its similar to how cars work... You don't see anybody saying no please Mr Lamborghini I don't require that amount of speed, please can I have less?
When the little fella in Oliver Twist says "Please sir, can I have less?", No I thought not... More, MOAR!!!!