6 months is too short to experience boredom. We have years of things we have been putting off to do. I think it takes 1-2 years before it starts to feel like too much time.
Still, I have 10+ years of evidence that employed work is boring, stressful and unfulfilling for me - so if I did feel bored after 2 years (and money wasn’t an issue) I really don’t think I would consider returning to employment to alleviate it. Being a corporate project manager is surely the very last thing most people would reach for to provide entertainment or fulfilment :)
Oh don’t get me wrong, I’m never going back to a corporate job. I’m just saying there is some boredom. But it’s way better than a bad job. I just found a startup founder who needs some help. I’m putting in like 10-15 hours most weeks, on my own time, and it’s quite enjoyable