What else can result in your lungs, heart and legs working so cohesively and rhythmetically while keeping a smile on your face for two hours... during each and every outing? It doesn't make you want to take a break and smoke a cigarette.
The fact that you have to perform in public may be one of the disadvantages. You get used to it, but it is one of the downsides. As a group activity cycling can be invigorating and will never result in disease or jealousy. Cyclists are seldom obligated to long term relationships or legal contracts. We are always free to drop out of the peloton and rejoin later, no hurt feelings.
Cyclists do need to be "on the same page", can't have Fat Tire enthusiasts mixing it up with the skinny/hard tire types...not for long, anyhow.
Getting back-in-the-saddle after a few weeks off often results in a sigh of relief, "Oh baby, where have you been?" The answer is always the same, "Just hanging around waiting for your remount." Loyal, loving and obedient, my ride seldom disappoints.
I'll admit, there are times when I feel inadequate, however, good coaching or a more appropriate gear, usually puts the smile back on my face. Cycling and sex can work together for a life of excellent endurance and satisfaction, yet, riding my bicycle five times a week seems reasonable and it's a lot cheaper than a stockpile of Viagra.