I agreed with your post. Sorry for the typo...I meant to write "and true" instead of "are true".
sRGB has really sort of become the default color space of the real world. In actual practice, it is what is "expected" many times, and it works quite well. Shoot in sRGB, edit in it, output in it, upload to the web in it, print images from sRGB files...it all ties together as a real-world color space that actually works for millions and millions of people on hundreds of millions of different devices.
I've heard all the puffery about editing ONLY using uber wide-gamut spaces....yah,yeah, yeah...and I ought to listen to ALLLLLLL of my music on vinyl pressings with a $2,000 turntable through reference grade headphones OR using $5,000 a pop speakers with $500 per foot speaker wire....yeah,yah, yeah...no...I listen to most of my music in MP3 format on a computer, on my phone. I do not see a lot of advantage for the average person to messing around with ultra-wide gamut color spaces when they are going to be e-mailing the files or e-mail a gallery URL to friends and family who will view the shots over the internet.
If a person needs to ASK what advantages Adobe RGB offers, I don't think there's much better an answer than "none", and "Shoot and output in sRGB. Make your life easier...go sRGB all the way."