My point of view is very simple - meta is not something of crucial importance. But whenever I have the chance to use proper keywords in meta - I do that. I think that good meta can sometimes be a nice factor to give extra boost.

P.S. And don't forget that Google still displays the 'decsription' in its results and bolds the keywords that fit to the search query. That is why I think in todays very competitive market every chance to get extra boost cannot be missed. And meta can be this extra boost by no doubt.

P.P.S. Some tinier search engines still use meta. Of course, they can't give the loads of traffic like Google and Yahoo. But I am never against extra 10-20 people per month if they come from small search engine, because there are no 'extra clients' in the business.

IMO Meta Description still has some importance in SE ranking and META keyword, though it is still considered by Yahoo and some other obscure SEs, Google totally ignores the tag.

This is solely for the reason that META keywords is a thing that can be easily manipulated and Google lays much emphasis on things which can't be manipulated like one-way links from authority sites.

So my advice would be to use META tags if you feel that you've got and you'll be getting some benefit from it. And be happy !