Will the property rise in value at a greater rate than you could earn by selling it and investing the proceeds (minus capital gains tax) in the stock market? That's a tough prediction to make, and given how high U.S. real estate has already appreciated of late, the answer may well be no. However, many real estate investors feel that the safety of their investment compensates for these potentially lower returns.

Being Your Own Boss

Some people make their living by buying, renting out, and ultimately selling real estate. If you only own one property other than your primary residence, you're not yet one of these big-time real estate investors -- but will be getting a taste of that lifestyle. Some people love the independence, and the chance to put in a little sweat and creativity in search of higher returns.

If, on the other hand, you've got your hands full with other projects, don't have the time or inclination to learn the landlord/tenant laws, and aren't ready for regular dealings with tenants, contractors, and local officials, being a landlord may not be for you.