Congratulations on your upcoming birthday, Amy. From the clarity of your writing and excellent grammar, it looks like you will be off to a good start.
However, be careful out there. Although Wikitree has guaranteed your birth date is safe from the prying public, other sites are not as generous. Anybody can find out your birth date, mailing address, telephone numbers, previous addresses, your relationships, your court records, and more by paying a token fee to any of a number of online data processors. You see, the real reason public information is not free to the average person is because there are rich people who want to get richer by legally selling your personal information.
When I was 17, anybody could go to the local town clerk's office and pay $5 for a certified copy of my birth certificate, and they did not have to show ID or a reason for obtaining it. You might think I'm lucky to be alive, but this was true for everybody. Thank goodness you don't have to deal with this kind of trauma.
Unfortunately, if you want a job, you will still have to fill out a job application which will include your name, place of birth, birth date, current and previous addresses, education history, close relatives, your Social Security number, and your race and gender. In today's savvy world of intelligent crooks, you can bet that if a stalker was good at what he or she does, they will get a job as a Personnel Manager at some large company, and then sell your information to someone else even more devious.
At least they won't be able to confirm your birth date on Wikitree. Wikitree will be safe, and genealogists will just have to wait until their relatives die before learning about them; assuming of course, that they outlive their relatives. Right now, anyway, you should be in a good place to outlive your older distant cousins who likely have interesting family stories, and learn their names after they are dead. Too bad you won't be able to hear the stories, though. And when cousins are born younger than you, you can pretty much forget about ever knowing them and passing on your knowledge, personally. However, we have to be safe; no benefit is worth a potential criminal learning your name and birth date on an open source genealogy web site.