Mastodon seems to be a Patreon-friendly environment, so here's my rationale for using it.
I volunteer as a director of digital rights non-profit boards; Open Rights Group, The Document Foundation and the Open Source Initiative. To pay my bills, I write about my experiences and views (and consult a little).
The writing is supported by my Patreon patrons. If you would like to help me continue writing (and volunteering) then becoming a patron would be very welcome!