Interesting question I was asked the other day and thought I'd offer it up. Disclaimer - I did things the traditional route - Private-SE, Instrument-SE, Commercial - SE, CFI/II - SE, ATP -SE (weird I know), ATP-ME, MEI.
Anyway, for a person that has no desire to instruct and only wants a flying career would it be a better choice to forego the single engine training in favor of conducting all training in a twin? Financial means aside of course. Interested in getting perspective before I formulate a response