The listing is pretty easy from eBay's phone app. I do it all from there. The shipping is easy for me because I live within walking distance from USPS and FedEx. I don't mind it that much because I quit my job to do this and have to find a way to enjoy it. As for someone doing it on the side as a hobby, your sentiments are quite understandable.

Re: Craigslist - I only sell certain things there and have made myself come to enjoy playing around with low-ballers to make sure they know there's not a chance. I try to qualify people about the price right up front and find small ways to get a sense of their commitment level before I emotionally get my hopes up that the sale will happen.