70 years & still riding here. my suggestion is buy it-we all need goals in life. but rather than jumping in then losing confidence you ought to by a rear wheel trainer to get into the groove first.when contols become second nature hit the bike paths.30 years past isn't so long ago & over the Winter will give you time to continue where you left off. great to hear your not letting arthritis slow you down-have to keep the joints active,I'm in the same boat