So why do a single engine IR(H) then? It serves no purpose. I'm all for people being confident to fly on instruments if necessary, but most people shouldnt even be flying if they are not suitably qualified, in an aircraft not certified for IFR flight and in IMC. If the wx is !!!!!, you shouldn't be there in the first place, kind of thing.
If someone knows of a piston single, certified for IFR (does it have the necessary Autopilot/IFR fit etc) then please let me know.
Helicopters are predominantly VFR machines but the ones used for IFR commercial ops, are all twin engine (uk)
I think this argument could run and run.
Ok, do the training on a single perhaps but for what purpose? To then go and do the conversion to a twin anyway? Why not get the experience on the Twin, in IMC, more complex aircraft to keep on top of etc.
Or why not this:- Consider it part of the joining fee to a fairly exclusive club???