I absolutely love chalk paint for its ease and dread when I have to use latex or oil based paints. But...you don't have to use wax on your chalk paint. To use wax, you need to love a wax finish. This typically means that you will have a matt finished surface with some streaking in it. It happens. It's the look. If you don't want to use wax - there are plenty of easy to use finishes that will make you happy.
The desk below has a clear gloss polyurethane on it. You can see how fabulous and glossy the paint looks. If that is the look you want, then a polyurethane is the way to go.
This french dresser has a vintage look where the wax finish was perfect and worked for this piece.
Wax is also great for chairs. You can apply it with a rag and there is zero chance of having any drip marks. :)
So....know what your want your piece to look like. Don't stress over waxing and don't feel bad if you don't like the finish. There are plenty of other options that are easy and quick to use that will make you super happy with the end product. Go try one!