We're about to receive a mil in funding. It's a "cool" startup, as in it's trying to solve a hard problem with a still to be completed hardware solution that also involves a lot of trendy (deep learning and more) software.I had a discussion with the two cofounders where they confronted me for not being engaged enough. They have a point.I'm only moderately excited about the product and the problem space. And I don't enjoy working with my cofounders very much.I am the most experienced (they're basically newgrads). Part of what annoys me is their inexperience (leading to bad decision making, while not listening to common sense advice). At the same time I feel we do complement each other well because we are quite different personality wise, and it's possible that as they mature the issues I have will go away.I've invested 9 months of ~25% work. It feels crazy to leave when we're about to get funding, and where I don't actually even have to fully commit as I'm parttime at officially 20% supposed to go to 40, and me going fulltime is not being asked for. I'm worried I'm being a diva, I have a habit of dropping people the moment things aren't going well. Maybe creating an ambitious new product does require people that wouldn't hang out normally (diversity is good blabla)?At the same time there's other things I'd also like to do. And why should I invest more time working on something I'm not excited about, and with people I don't look forward to seeing?I knew what was gonna happen in the meeting, so I had planned some stuff to say to smooth things over because I thought I should try and stay. But when it was pointed out that after a recent major milestone I hadn't posted anything on any social media, it made me think why I am I working on something that I don't feel the urge to share with anyone? My instinctual  answer is because we're very far from having a good product, but I feel that's not good enough. And so I just said I need to think about it.