How many email addresses do I really need?

I have used kimingvtx@yahoo.com as my main email address for a very long time.  When gmail came out, I grabbed kimingvtx@gmail.com.  Then I realized that I could add another yahoo address to my account and I added mathtutorkim@yahoo.com.  Recently I was giving out my email address again and I always have to say k-i-m-i-n-g-v-t-x very slowly and it was getting tedious. Also if I have to update my resume, I didn't want to use that one.  So I created kim.saunders@live.com  (which I will also use, I guess, if I ever leave Grapevine Texas).  I also have a TCC email address.

I'm slowly moving some things to gmail in anticipation of getting my Droid Incredible phone.  However, I'm keeping all the email addresses  -- I should be pretty easy to get a hold of!