FontAwesome - Could it be a good investment?

FontAwesome is a popular service and I use it quite a lot on this website for example, but only the free version. As FontAwesome is moving forward with their version 6 I am considering to purchase a Pro license. The question is if it is worth the cost?

FontAwesome Pro cost $99/year and with that you get a lot of additional icons and icon weights. You can also upload your own icons to be distributed in the same instance. This is great as I do not need to create a separate icon font for distributing my icons. It is even better as FontAwesome Pro have both a better CDN distribution and also comes with auto-subsetting.

The downside is that I get stuck with a yearly cost. If I do not pay that I will not just loose the license, but icons part of the Pro package will acually stop working. That is a pretty big drawback as I would put myself into a situation where I could risk getting caught in a financial trap or risk having to redesign the site based on iconography.

Still, it is something I am considering. I do tend to rebuild and redesign bi-annually anyway so maybe it will not be such a bad idea after all.

What is your opinion? Is it worth the cost?