Rex ...
"As it is-larger homes in my area are not selling.The "For Sale" signs in front of them have weeds growing around the signs!Some have been up for sale for a few years now!"
I'm not familiar with your area, but as a real estate investor I can tell you that inability to sell homes has a lot more to do with their location ... marginal schools ... depressed area ... and LACK of size and amenities.
In many neighborhoods, in fact, the opposite is true: the homes that aren't selling are the 1940s-1960s era homes that are three bedrooms or less, fewer than two full bathrooms, with only two (or worse, ONE) car garages. Sadly, these homes that just a generation ago were considered "family" homes are now barely considered "starter" homes, and unfortunately do not fill the bill for how Americans live today.
Even small families (one or two kids) need at least one extra bedroom for the home office/man cave/guest room (since these days most people no longer live in their hometowns and need that extra space for visiting family members).
Two-car garage is mandatory (since most families have at minimum two vehicles), and unless you have space (or the inclination) to build a "shed" in the backyard, you'll need a third garage stall to keep all your lawn and garden equipment, including the snowblower.
And if you have kids, two full baths is absolutely essential anymore ... preferably with at least a powder room near the living area for guests.
The thing is, in terms of NEW homes, thanks to advanced building techniques (in most cases), extra square footage is relatively cheap. Builders of developments today won't even bother with anything under 2,000 square feet anymore.
And forget about those empty nesters looking to "downsize". Developers of the "acive lifestyle" "over-55" communities often START the homes at 2800 square feet, with some of the upscale developments topping out at 4500. Why? Again, it's how we live. Grandma and Grandpa want spare rooms for when the kids and grandkids visit, since most families these days are flung all over the country (if not the world). And developers are wisely planning ahead for the possibility that owners in the future will need plenty of extra space to maneuver wheelchairs and walkers: extra large rooms ... extra wide doors ... spa-sized bathrooms.