Why don't you accept donations?

A couple of reasons, each on its own is enough for me to not want donations.

One reason is a mix of practicality and because of who I am.

If I were to accept donations, I would be unable to not disclose exactly what is going on with these donations: revenues, withdrawals (for what purpose), etc. Because these would be funds donated with the expectations to help, I would want to disclose everything related to these donations, so people who have given know how their donations are used for this project. I wouldn't be able to do otherwise. Thing is, I don't want to deal with all this administrative work I would bring to myself if I were to accept donations.

Another reason, to ensure the main purpose of these projects is protected.

If I were to accept donations, then in my opinion, the projects (µBlock, HTTP Switchboard) would start a slow descent toward becoming dependent on outside funding, a slow descent toward a mean to earn funds, and this drift eventually leads to the projects' main purpose becoming vulnerable to other agendas -- which considering the purpose of these extensions is not a good thing.

There are excellent open source projects out there which accept donations and are not compromised. Some others are in my opinion. So, as it is, I don't want µBlock/HTTP Switchboard to have a dedicated home page (requires funding), a forum (requires funding), or whatever requires funding. No financial footprint means no way the main purpose can be diverted (µBlock, HTTP Switchboard are GPLv3). It bothers me Firefox decided to go along with HTML5 DRM.

Another reason, I want to be free to do whatever I want.

I may get bored with these projects and wanting to move on to something else. Accepting donations would force me to keep working on these projects, because people who donate usually have reasonable expectations in return for their donations: to keep the projects going. I want to be free of such funds-related expectations.