If your current web designer does not have meta tags in your site, without a doubt FIRE THEM! All sites should have meta tags, keywords and descriptions …period!
I have read a number of opinions and articles on the subject, and every one that I have ever read that says the meta tag is useless, without exception they all have included meta tags in their own sites.
Now they can be misused, and their value today is not what is once was, however the totality of time required to insert these into your site is not over 5 minutes. Why would you possibly not take 5 minutes to help your web site to be found?
Meta tags, keywords and descriptions are codes that are inserted into a web site that search engine bots and spiders read to catalog a site into the search engine databases.