Another reason to get those leaks repaired is that the constant dripping is damaging to the faucets themselves. Water is aggressive by nature and will eat out a channel in your faucet which means before you know it, you'll be shopping for a new faucet.
The USGS (U.S. Geological Survey) has a drip calculator that put's leaks into perspective. Just 1 faucet dripping 1 time per minute wastes 34 gallons a year. How much water are you wasting? Check out the drip calculator