Bored? So much you can do!
In general I cannot believe my ears when people say this.
You can now live on your terms. There are things called hobbies, you can buy a guitar and learn to play...take lessons in person or online, at your own pace.
Redecorate a room in your house, sometimes just paint makes a huge difference.
Join an afternoon bowling league.
You can learn a language.
Go for a hike or a bike ride on a regular basis. Go camping. Visit a museum or state park.
Go to Starbucks in the morning, after becoming a regular you'll naturally meet new people to talk to.
There are so many organizations who can use a volunteer. Even if it is just 1,2,3 days a week.
Be grateful for your newfound freedom. You don't have early starts or late finishes forced on you anymore.
You get to avoid rush hour and leave your house at 10AM to get on the road.
SO many more things. Zero sympathy for anyone who allows themselves to become "bored" in retirement.
Just because there isn't somebody telling you what to do, doesn't mean you can't do anything.