Hunlam, it doesn't matter that you are older. I do know women 10 years older than you who are still biking.

If you want to be modest, to try riding someone else's bike for an hr., if bike fits in a quiet area/quiet time of day. You could always rent a bike. I think many European countries have more cycling facilities and bike paths. However I don't know Sweden. By the way, my parnter, when he was in Europe looking at cycling facilities for his biz, he did cross the bridge from Copenhagen, Denmark (where it is cycling friendly) to Malmo, Sweden.
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http://cyclewriteblog.wordpress.com/ (How cycling leads to other types of adventures, thoughts)
http://velourbansism.wordpress.com