“are you related to mikehall 12345678 “
As far as I know we are not related.
“First, the prohibition is only to learn secular studies as a regular curriculum. “
As the many gedolim who attended university prove, there is no such prohibition.
“we do not make the error of thinking that the secular knowledge that we need is a college education”
Instead we make the error of thinking that we don’t need Jewish physicians, engineers, or scientists. Rambam and Sforno worked as physicians, the Lubavicher Rebbe worked as an engineer, and Rav Herzog discovered the source for techelit.
“you can acquire it only at the expense of your time and effort that you could have been putting toward becoming educated in Olam Habah”
To the contrary, you will understand and appreciate Chazal’s science more if you know something about Greek science. You won’t understand Rambam if you don’t know something about both Aristotle and the Islamic philosophers. You will understand and appreciate Rav Lichtenstein’s torah if you have know about Milton, Blake, and Newman. You will understand Rav Hirsch better if you have heard about Kant and Hegel. And you will not be able to dismiss Rav Tendler if you have a biology background.