Adobe RGB colorspace of little use

After doing a lot of research I came to the conclusion that saving .jpgs in aRGB is pretty much useless. Photolabs online want you to upload in the sRGB colorspace, the stores like Walmart and Cosco also print in sRGB. The only option might be to get an expensive photo printer to do wider gamut prints otherwise all you can do is see the aRGB picture on a supported colorspace software on a supported IPS monitor which equals to more dollars. Its all a waste of money. Is it worth the extra shades of color for all these trouble? Better stick to the standard.