Keeping up on the web also means looking forward. Progressive enhancement should always be a part of the process. Being one step ahead might turn out to be right on time. In the world of web design, if you’ve not hopped on board the responsive train, you’ve probably got some serious catching up to do.
If the percentage of users browsing your website on smartphones and tablets is super small, that does not imply you should ignore small resolutions or stick to the old non-responsive habits. With the mobile market boom, those figures could go up quickly and are certainly to be expected. Especially if you go the extra mile and make sure you deliver. Increase of mobile users certainly won’t happen if your mobile user experience is subpar.