Awww...
I'm sorry you are feeling sad, but maybe try looking at it this way. You have a home with landscaping and children who love you. You have friends who care about you and are willing to help out when needed. You have what many people can only dream of having. Sure, it takes upkeep, but that just goes along with having a home you can call your own.
Dating really isn't all it's cracked up to be. I'd much rather spend time at home with my kids watching a funny movie on TV or reading or just hanging out than I would having to get dressed up and going out on a date.
How about having a "staining party?" Go buy the stain, invite some friends over and have each one bring a dish, and afterward have a cookout. It could be a blast now that the weather is getting warmer.