At the risk of ... I dunno, something  ... I just wanted to point out that buyer issues are (by virtue) at the very least seller considerations, which is clear to see in the replies to this thread, both by buyers, and the sellers (see jens' posts, for example - which indicates couriers aren't always a complete solution, and that ATL is provided on courier packages for the customer's convenience and thus far at minimal risk).

I would actually be fairly close to you target customer - working from home in a metro area means couriers don't make me avoid a seller, but that doesn't mean they can't be a major PITA, particularly in cases where tracking says "out for delivery" at 9am, and then it's 4pm and I'm still waiting, not being able to go anywhere all day - it's a situational inconvenience, others may always be able to have at least one person present at the delivery address, and certainly places of business generally don't find having to make someone available at all times an issue (I do have horror stories as a recipient, way worse than anything I've experienced with Aus Post, and it's impossible for me to pick up from any depot if I miss a delivery - they're all miles away and I don't drive, so my refusal to provide ATL contributes to my inconvenience, but in the grand scheme of things, I'd rather my $500+ orders are delivered securely and remain insured until I definitely take possession of them). 

I think, though, the main thing I wanted to say is that it can be counter-productive to change your entire business operations based on one instance (or even a few). I definitely get the "I'm never letting that happen again" thing, but at the same time, if I did that every time I (as a seller) had a delivery issue, I wouldn't be here anymore, or if I was, I'd be sending everything by express post, with SOD and extra cover.