Yeah, this is my go-to belief also (and was before BnW also, btw.). It may not earn you as much gold as Tithe overall, but you get it faster. It's very easy to get a quite large early influx of gold with this belief, and you don't have to worry about AI converting their cities back.+100 gold per city conversion.
It's great for early game gold when you need it most, and if you aren't wanting to focus on Religion 100%, you always get paid early and it doesn't really matter afterwards if other religions take hold.
In G&K Tithe was a 100% pick.
Now not so much due to trade system generating to much gold.
That would require you to convert 50-100 cities?... but if you have non-religious civs near you and you plan on staying small - taking Pilgrimage can easily add another 100-200 faith per turn a game, even in the early game.
Tithe still generated 100+ gold for me by the endgame.
100 GPT is huge, even with trade routes.