I just have 5 more weeks of 2013 PL to do. I am going to skip all of 2014 (for now) and then re-start with 2015. I am taking less photos these days too, so I may switch to 2 week spreads instead of every week.
Even if I do PL every other year, that's still a pretty good representation of our lives! Plus, I do a Shutterfly photo book as an extended family gift every year, with a 2-page spread of just photos for each month, so we always have those if I don't keep up with PL in any particular year. It doesn't capture the little, day-to-day stuff, but oh well.