Considering my name, Alexa is not a good choice, I'm sure my mum would be false triggering it all the time talking to me.
Besides the nerd in me wont let me change it. I still get a kick out of yelling "Computer, Lights" and the even more amusing "Computer, Activate Shield" to turn on my ShieldTV.
If they ever let you change the voice and they release the Majel Roddenberry TTS pack (they apparently recorded this before her death in case they did want to continue using her voice) I will be in nerd heaven.
I mean you've seen my NAS monitoring screen.
https://csdprojects.co.uk/forums/LCARS.png