There are a few reasons dentists refuse to extract your tooth and convince you of the more expensive option. But, again, it's not because they want to earn more money.
Sometimes, even though you take care of your dental health regularly, there are times that your teeth might have underlying issues that need proper treatment. Always consider the best treatments for your teeth in that case, even though it is the more expensive option.
Get your tooth pulled, and you will immediately understand why dentists refuse to extract your tooth in the first place. First, you will be missing a tooth, and depending on where it was placed before, it could affect your appearance. For example, if it's front teeth or somewhere visible when you open your mouth and smile, it will make you less appealing in the visual sense.
Another reason why dentists refuse to extract your tooth and convince you of the more expensive option is that when they pull your tooth out, the other teeth will shift. It would eventually harm your everyday functions, such as eating and smiling. In addition, it could potentially ruin your once-perfect smile because your teeth would be crooked.
Also, remember that when you decide to extract your tooth, it would have to be an artificial replacement if you want to fill in the gaps. It can cost much more once piled up, so it's still the best choice to opt for the more expensive option because it's a one-time payment scheme, but it will not cost you anything else in the long run.