Hello erqerq, thanks for taking the time inquiring about the issue instead of just silently turning your back on us. You might spare a minute or two to go through these bits of information trying to clear up a some of the misconceptions that are flying around. Unfortunately some media outlets will rather publish sensationalized stories generating many clicks and increased revenue by ads than perform the most basic fact-checking:

https://medium.com/p/7645a4bf8a2
http://blog.gerv.net/2014/04/your-ire-is-misdirected/
https://blog.mozilla.org/blog/2014/04/05/faq-on-ceo-resignation/

If it were for Mozilla alone Brendan didn't have to leave - we would like nothing better than to rehire Brendan. In fact, we didn't want him to leave in the first place. However it was his personal decision to resign among all this ongoing frenzy, threats and mischaracterization of him as a person and the Mozilla community coming from third-parties, in order for the constant bombardment to end and to avert any further damage to Mozilla and its mission that he helped build for many years in such an essential role.

So in this sad process we have lost a co-founder and brilliant technical mind and now the "other side" of the political spectrum also comes along, again very quick rushing to judgement, bashing our community and some voicing calls for boycotts against our products.
In my opinion Mozilla has not deserved to be in the middle of all of this and getting entangled in the politics of the day certainly isn't the right place for us to be in. Our community exists to advance the state of the Web by promoting openness, innovation and opportunity, which should be the one goal we can all unite around, no matter which views we might have otherwise.

Thank you!

You should keep using Firefox as Brendan Eich would want that and because Mozilla did not fire nor forced him out.

In fact he could probably come back to working at Mozilla in some role if he wanted to as the Mozilla board encouraged him to stay in some capacity when he chose to leave.