Lyston, did you get a satisfactory answer as to how sexual reproduction may have easily evolved (and is supported by the evidence we see)? I don't have time to read 10 pages of this thread, and can write a concise, understandable description if it will help.
However, if I had to guess, I'd guess that some of the well-informed people here have already done that, and if they have I won't waste the time doing so.
If you understand how sexual reproduction likely evolved, let me know so I won't type it out.
Have a fun day-
Equinox