This question already has an answer here:
I know that the question "is it okay to resign after one month" has been asked before (like here), but in the questions I've read people left mostly because of a bad working environment and that's not my case.
This is my story: I'm in software development, I don't like the project I've been put into, and I don't know whether I should wait a bit to see if I even understand it / like it, or just leave. It's related to a field I'm not interested in, and the UI is so dull it annoys me. I don't feel motivated to improve it, and I get a sense that because of the sheer size of the project I won't have many opportunities to suggest changes to the system. Also, some coding practices are questionable.
So why did I join this place you ask? In the interview I was told that this was a big project where I could learn a lot, full-stack stuff, etc. I like to learn so that bought me in. But here's the thing: they also told me what the project was about, and I still accepted it.
Now, a few weeks in, I feel like this isn't the project for me. I received all sorts of training on basic stuff but I expected training on the business model and got none. How can I ever code for a system whose rules I don't know? I asked my colleagues and they told me that this was expected, that they didn't get trained either. I even talked to one guy who worked there for a couple of years and he said he didn't understand half of the system, but that there's a reason many people stay here for so long. He said I should wait it out, that it gets better.
So to wrap up: it had never happened to me before, but I don't feel motivated to go to work every day, I keep staring at the clock, and it's driving me mad. I think part of this is also because I haven't been assigned many tasks yet, but I don't know how to keep myself entertained during the ramp up period. There isn't much documentation to read.
tl;dr: the title really. Is it okay to quit after 1 month just because you don't like the project you've been assigned to? (A long-running project with no prospects of finishing soon). If it is, how do I phrase that in an exit interview in a way that doesn't make me look like I can't deal with challenges?