I went all out on RAM and put in the max I can on my mobo, 64GB, did it for several reasons.
1) Future proofing.
2) Opportunity, it has recently been slashed in price, I originally had 32 in, and the same memory modules are over £100 less than when I bought the first 32.
3) Intend to make a ramdisk, which is still faster than any SSD.
4) With 64GB there will be no need for a page file at all, but some programs do throw up errors, some even refuse to run, if they detect you have no page file at all, in that case I'll put one on the Ramdisk to trick them, done this before, it works.
5) Set temp folders to the ramdisk, rather than writing to an SSD unnecessarily.
6) I've manually set the pre-load radius above 150,000 by editing the options.lua file in the user/config folder.
Plenty of good reasons to have more RAM than you THINK you need, it lets you do some neat tricks to make your system faster/cleaner.