From what I have read after some research, it is generally recommended to not disable the pagefile (blth by Microsoft and SSD makers).
The amount of read/writes (as in total of GB) made by the OS to the SSD because of the pagefile does not seem to be very big, and with current endurance numbers shouldn't be any concern.
About the pagefile, Windows uses it in many ways. The most obvious one is as an extension of RAM when you're running out, but that's not so common unless you have little ram or use big apps. But if you happen to require more ram than you have at a point, with no pagefile it's an automatic crash; with pagefile it just uses it.
But, the more common usage, apparently, is as a low priority 'ram', to cache things that are not relevant enough to deserve a space on ram (with pagefile disabled, it will either cache it in ram, taking space that could be used for higher priority stuff, or directly not cached, which means less performance if that data happens to be used).
I have also read, but haven't been able to confirm, that it is also used to store data location/addresses for the OS to find them easier, similar to indexing.
So, I can't give you 100% factual data, but I believe you shouldn't disable it. You shouldn't really worry about the amount of read/writes this generates. The only worry about the pagefile should be the extra space used, but it's a nice thing to have, especially when you happen to need it, so at least 2~4gb could be a good idea.
I'll clarify that this is an ongoing discussion with different people having different opinions. MY research has made me believe what I have wrote, but other people might think otherwise. You are free to make your own choice, my biggest hope is that, at least, I have given you a reason to read a bit more on the subject and make an informed decision.