Do not get attached to your addresses. You should use a new address for each transaction. Just a small tip to stay secure 
This is true because of 2 reasons:
- You'll decrease your privacy if you re-use your address
- As soon as you spend an unspent output funding your address, your public key is included into the spending transaction. It's not a problem per sé, but it would make the theoretical chance of somebody finding your private key a little bit bigger... Still the odds are incredibly small (small enough to say they're 0)
This being said, vanity addresses usually do get re-used. For example, i re-use my vanity address all the time, i do coinjoin or mix most of my funds before i transfer them to my hardware wallet tough. And i don't really care for the fact my public key is known...