Comparing Caesarstone with natural stone is like comparing apple and oranges. Both are equally good, but some people prefer one to the other. The best thing about natural stone is that it is unique. No two slabs of stone will be completely the same. The look and feel of natural stone such as granite and marble are incomparable. Polished marble, in particular, works very well as a pastry slab, because it is cool and ultra smooth.
On the other hand, you are limited in your choices with natural stone. If you have a firm idea of how you you’re your home to look, you want to be able to choose a color and pattern that will work with your scheme. With natural stone, you have to choose from what is currently available from the suppliers, and there is no guarantee you will find something that would be perfect for your needs. With Caesarstone quartz surfaces, there is something for everyone.
Another big problem with natural stone is that it is porous. That makes them vulnerable to stains, and must be sealed to protect the integrity of the stone slab. Marble is particularly vulnerable, especially to acids. Caesarstone countertops are resistant to staining, and do not react to acids, so they do not need to be sealed.
What it boils down to is your preference. Caesarstone quartz surfaces are superior to natural stone in many practical ways, but if you like to stick to your guns, then by all means, go for it. Just keep in mind that natural stone requires a little more maintenance, and you have to love giving it TLC.