Of course, the answer to this question is that there are many excellent reasons for spending all that "extra" time and money to validate the safety and efficacy of a treatment for autism. Here are just a few:
Validation of the MethodYou and others may be absolutely certain that it's the special drug, therapeutic technique or diet that's making all the difference. But the truth is that you don't know what's making the difference unless you conduct double-blind research. The reasons for this include the fact that kids with autism usually develop and grow with or without treatment; parents often use more than one treatment at once; parents and researchers are both anxious to see positive results, and thus tend to observe them whether or not they occur (this is often called the placebo effect).
Examination of Potential Side EffectsRigorous research is necessary to demonstrate that a treatment is safe and that the benefits of it are worth the risk of any potential side effects.
FundingA treatment that has gone through appropriate evaluation is far more likely to receive financial support from foundations, government agencies, insurance companies and schools. If you truly believe in your treatment, surely you want to see it reach as many people as possible.
Positive PressThe reason some treatments receive negative press is because they have not been fully or appropriately researched. This becomes even more of an issue when only one or two individuals offer the treatment, and they refuse to "take the time" to do the research. If this treatment is so promising, surely others will be interested in learning about and evaluating it, too.
Peace of MindIt's smart to be skeptical of claims such as "the drops in this bottle will cure your child's autism." Is it conceivably possible that a cure for some kids could be available in a bottle? Maybe. Is it likely that Dr. X's bottle contains that cure? Probably not.
On the other hand, if Dr. X and a group of colleagues have received funding, evaluated the contents of the bottle through appropriate methods, gone through peer review, published their findings, had their work replicated, and can still claim a cure, it's likely that their treatment has real merit.