Because when you're searching its difficult to give you the result you want.
To break this down a bit, remember that what you want is very different from what you type. Sure what you type has something to do with what you want but...
'sweet lines' could mean:
-review of rad line skis
-review of a mountain
-forum thread about line
-forum thread about lines on a mountain
and so on.
Text matching does almost nothing for giving you 'what you want'. Now, we have a super terrible way of assisting with this by allowing filtering by section. At least you can pair it down by what type of content on NS you're looking for.
Google has bananas amounts of data that they collect, which is unfathomable to you and me. They literally download the entire internet constantly every day, and process the fuck out of it in real-time over a network of worldwide data centers with more computing power than you can imagine and run those searches through the most complicated algorithm ever invented.
They take all manners of data points to give you 'what you want'.
Easy to say 'so use google' - and we have done that in the past. However, people didn't like it because there weren't the filters. Our old search sucked, our new search sucks, our google search sucked... everything about search on Newschoolers fucking sucks fucking rocks.
I would absolutely love to address this issue, and believe me its on our radar - however to do it RIGHT - and make it 'not suck' - we have to really look at the information architecture of Newschoolers, and tailor what we're doing to what people are searching for. Simple quick changes to the search aren't going to do much, as we've been there a zillion times. Every simple change we makes ends up absolutely sucking.
So for right now, we're working on the million other things that people want to see changed on Newschoolers, and we're letting the search rot. Does it suck? Yes. Does it suck worse than other things we've done? Depends on what you're searching for.
This is a huge issue with the site, and something that we'll dial in one of these days... but for the time being it is something that we're leaving as is. The best thing we may do is put google search back in, but allow you to pass more operators into it for section searching. In terms of ab and-aid, that is probably it.