I like your attitude, Goth.
and ultimately that's what's going to happen - people will either get scared and leave or they will ask questions, get familiar with the condition and then decide how to proceed.

Anyone suffering from a serious medical condition should reveal it as soon as necessary. I do not believe that most conditions need to be revealed in a profile or the first few meetings. But once the relationship is forming and becoming serious enough for both people to develop a certain level of attachment, the condition should be revealed.

I will also add that people should try to avoid the "brutal honesty" approach. I'm sure I've talked about it before in other threads, but it's worth repeating. Unless your illness is very common, the best thing to do is to allocate the right time and place for a proper discussion to take place. Reveal the information calmly, in a safe and comfortable environment (not at a pub over a beer), explain your specific symptoms and how they are managed. Also explain what your partner may have to face in certain circumstances, if you decided to pursue a relationship together.

Yes, be prepared that some people will bail as a result. But if you take your time and make the effort to present the information calmly and accurately - do not say something like "hey, I have terminal cancer but it's no big deal" - if the other person cares about you as a person and as partner, chances are they will stick around, after they've had a chance to process the information and do a little of their own research about the condition.

Remember that you've had some time (maybe even years) to come to terms with the effects of your illness. But you were probably in shock when your first learnt about the condition, it probably felt very lonely and scary at first, especially before you've had a chance to find out more about the illness and all the available treatments for it, which allow you to lead a mostly normal life, maybe with a few minor adjustments. That's how your partner is going to feel too. So, offer them the time to process but also the benefits of your knowledge, which should help with the processing.

Most illnesses can be managed quite successfully most of the time. But both people need to be prepared when the occasional not-so-good times come about. It part of life. And in cases of most illnesses, there is some level of predictability, which should help both parters be prepared and be able to cope, without ruining their existing relationship or, in other cases, without preventing a potential great relationship from forming.