The premise is good: no noisy kids around, and restricting ownership to like minded people at the same stage of life as yourself.
However, think of the worst case scenario: what if you needed to have your grand child move in due to a problem with the parents (physical or drug abuse, abandonment, etc.), what if the economy or your personal situation changed and you needed to rent out your house for a couple of years, or mortgage rates spiked and you needed to sell "rent with option to buy" to get people to even look at your home? Does the HOA allow any of those? By buying into that HOA, you are empowering people to control certain aspects of your life. And many of those board members are only too happy to hide behind the "rule book" when turning down your request for an exception.
We purchased an investment condo (non-55) during the housing downturn. There were no restrictions on buying as an investor and renting it out. But a new board decided that "evil landlords" were destroying their property values, so they put restrictions on who could buy into the neighborhood. ALL new owners and tenants had to submit criminal background checks, proof of sufficient finances and submit to a PERSONAL INTERVIEW with the screening committee. Some committee members went a little overboard with the power: when I sold, my buyer was an adult, buying the condo for his senior aged mother. BOTH were submitted to a very detailed personal interview by neighborhood busybodies, which strayed into non financial areas.
Previously, I had not had a problem with HOA's, but now am very, very cautious. During family emergencies and financial downturns is not the time to have to throw yourself to the mercy of an HOA.