I know exactly what you mean about using Robot voices . I not a fan of it either , But as technology improves I am finding it good for quick filll. I use MS Azure mostly it has 248 different voices delict an customizable emotions such as whining and raising ones voice. I have a Microsoft Azure account for my website so it does not cost me anything to use it . But you do need to know a little about Azure Scripting to acess all the functions But you can check the demo out here for yourself .

But like you said nothing beats real people as voice actors. and Back 10 or 15 years ago I could find tons of people willing to do it for free. But now days everyone want to make a bucks. So it leave a artist in a tough spot. when it comes time for actors.