The main thing to consider here is that Hacker News probably isn't your audience. Unless your product or service is aimed at developers/software engineers first and foremost, the probability of it getting relevant feedback via Show HN is slim.

And to some degree, that's one of the big reasons why this community can be so harsh or mean. Because for the kind of person who uses this site, many of these Show HN projects feel like things they'd be able to build themselves, or which can be done better via some simple technical process. I mean, look at Dropbox. People here were real harsh towards that one, and didn't understand the market potential for it at all.

It's also subject to the same trends as other expert focused communities, in that experts in a field/creators in a field will usually be harsher towards others in said fields than the general public will be. They know how the work is done, and are looking for technical novelty in such rather than the content of the work.

So don't take it too seriously, remember that people here probably aren't your audience and that they're likely to be significantly harsher/more dismissive than the general public is.