"In the context of the original question - which by the way is an eminently sensible one - this is just another of those tricks of rhetoric that 'Magickians' use to disguise the fact that they're wasting their life on navel-gazing and have nothing to show for it. "
But leaving aside accusations of arrogance...
So, the only things worthwhile doing are those which gain you sex, money and power? If those are the only things that make you happy, then you are quite right. Magic will not help you. Take a degree in computer programming and good luck to you.
I have plenty to show for it. I am happy, healthy, madly in love with someone with whom I am very magically in tune, I wake up every morning glad to be alive. I can't give you a formula for that, or "prove" it in the way you can claim to "prove" something with science. That doesn't make it worthless.
I agree, (sorry QS) a whole bunch of magicians out there do not help themselves or the rest of us by issuing trite statements designed to belittle people asking honest questions. Nor are people asking questions enamouring themselves to those who practise magic by phrasing those questions "Well, justify to me why you're doing something pointless".
OK, in answer to your honest question. Magic is not a science. It's not about moving mountains or creating flashbangs. If you're dissapointed that real life isn't a special effect, I'm sorry. The effects are subtle and truly powerful magic has the strongest effect on the caster. I'm sure that's bloody frustrating to hear, because you want to be able to measure it on a thermometer or a radiation counter or a ruler. That's a bit like trying to weigh love or take the temperature or anger. You can try, you may even get a result, but it will be utterly meaningless.
If you want to hear more, I'll tell you more. You don't have to believe me, you don't have to agree with me. But please, try to keep an open mind and lay off the insults