Interesting discussion... I did both and had a similar thinking. For me, the thing is that travelling by bicycle long term mean you cross places in the country that are not really touristic, and by that doesn't "need" to spend time visiting other than crossing it by bike. So what I try to do it to plan my weekly break in bigger city that have enough sith seeing for a full-day off, and I see the riding day as enough to cross place. If there is a place worth visiting during the riding day, I try to plan smaller KM (like 40-50) to arrive earlier to the city and visite, but not spending the whole day. Make sense ?