The danger with being an enthusiast on an open source project with users is that you stop caring about the users and just care about having fun, and people suddenly get massive amount of work because new API is fun for you but not backwards compatible for them.
So you need to make sure upfront to tell people whether you're doing open source for fun, or to help users. The former is perfectly fine as long as it's communicated up front.
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The danger with being an enthusiast on an open source project with users is that you stop caring about the users and just care about having fun, and people suddenly get massive amount of work because new API is fun for you but not backwards compatible for them.
So you need to make sure upfront to tell people whether you're doing open source for fun, or to help users. The former is perfectly fine as long as it's communicated up front.