I built Instapainting.com to serve customers and have not personally had a reason to use the service myself. Essentially I have to do more guesswork and testing, but it can be done. Not all services have to be built to satisfy your own needs, and arguably at some point all services must grow to beyond one’s own needs. So it’s a necessary skill to develop and required at some point to grow and serve new niches or new use cases or markets.