The wear on an SSD depends on it's size and how much is already stored on it. The memory technology on the drive is also a factor. See any article online about SLC, MLC, TLC, QLC and what the differences are. I'm not going to go into detail because it would become TL;DR very quickly. Then there is what you use the drive for, how often it gets written to without the page file in question, and a few other factors. Modern SSD drives should last you anywhere from 2 - 5 years, as SpaceGhostC2C has mentioned. The average lifespan being about 3 years. Usually the drive monitoring software that came with it will alert you when it comes time to replace it. The reason you may be seeing a lot of page file swaps is due to the fact that certain RAM speeds, are now comparatively slower than certain SSDs (especially NVMe M.2 drives). It allows the software to access frequently used data quicker thus increasing performance and responsiveness.
I am using a 2TB m.2 NVME SSD for my boot drive only and I set my page file from half my physical RAM size to double my physical RAM size. The performance improvement was very noticeable as programs load faster (especially with memory intensive programs such as games), and my boot times are quicker. I'm not worried about wearing out that drive because I only use a fraction of it for The OS, system related files, apps that are required to be on the boot drive or OS drive, and an overprovisioning partition (just in case). Currently there is about 1.3 TB of free space on that drive. This gives me the ability to use it as a page file drive far into the future without ever worrying about drive failure.
Info on different types of memory cells for SSDs.
https://www.howtogeek.com/444787/multi-layer-ssds-what-are-slc-mlc-tlc-qlc-and-mlc/