I'm 20 years old, and I'm trying to get out of debt. However, I'm concerned about what might happen when I'm older and don't have a credit score. My girlfriend says I won't be able to get a job or rent an apartment without a good one. Is this true?
No, it's not true. I'm sure your girlfriend is a sweet person, but she has no clue what she's talking about in this situation.
In either case you can simply explain that reason you don't have a credit score is because you have no debt. Since you don't have any debt, you have something known as money. That makes you very stable, and it makes you a fantastic candidate as an employee or tenant.
Listen to me, Ian. I'm a landlord, and if I had my choice between a tenant with no debt and no credit score and someone with a high credit score but lots of debt, I'd take the one who has no debt in a heartbeat. Why? Because that's the one who is most likely to pay.
Besides, you already have a good credit history if you've paid your bills on time. Show them proof of that, if necessary. But taking on a pile of debt to have a high credit score or increase your current score is just plain stupid!