I decided to pay for Kagi for a month or two to see for myself what they have to offer. Now, after several months, I don't think I ever want to go back. Sure, I have to pay for it but in return I get relevant results right at the top without having to double check every time if they might have been sponsored.
I must admit, occasionally I do still use "!g" but it's for some very specific things and very infrequently.