Should your price reflect that you enjoy doing what you are doing?
If you love what you do, I would argue this should not affect the price.
Your work will reflect your passion of course, as will probably your reputation, and your general demeanor towards clients, which are all good things. But not your price.
I think your price should instead reflect how much does the client NOT enjoy doing what you do. Maybe they don’t know where to start, where to stop, or don’t feel they have the time to find out. The harder it is to face the “grindstone” and get the work done themselves, the more they will be willing to pay you to do it instead. As a plus, if they pay a highly qualified person to make the decisions, they can then say they did everything in their power to do it right. If something goes wrong, they can always pass the blame on to you.
The price tag should not reflect how much you love your work. I look at it as a form of financial “self-defense” for experienced and talented people who create with passion but are then hesitant to put a realistic price on work they enjoy.
On the other hand, if you hate what you need to do for a single client, or simply don’t like the client for some reason, by all means, slap a “tariff” on it. Just don’t give discounts based on your passion, those are rarely appreciated, and can even sometimes be turned against you in negotiations.