The kind of people you tend to meet in bars are the kind of people that either drink as a hobby or who are desperate to meet other people.
What are your hobbies? Can you join a club that deals with one of them? Odds are there will be members of the opposite sex also in the club, some of whom may be single and attractive at the same time.
What about joining a group that does something useful, such as Habitat for Humanity? Again there will probably be members of the opposite sex who are also altruistic, single and attractive (not to mention good with tools).
Or go hang out in a book store or music store that caters to your interest group, go to art gallery openings or indie film screenings, find an interesting church to join, volunteer at the animal shelter, or many other things.
In short, go where the type of people you are liable to get along with are and start up a relationship based on something you and they all enjoy.
It can’t hurt, and it will get you out of the house.