I got this a lot. I think it was the cause of me not getting a few job offers. It's good to pre-empt the concern and be clear about wanting to take what you learnt on to another project.
What I found hardest was trying to explain that I also didn't want the stress and emotional ride of running a company for a while - without coming across as lazy or unmotivated.
What I found hardest was trying to explain that I also didn't want the stress and emotional ride of running a company for a while - without coming across as lazy or unmotivated.