Hi @Nick Cooper - you are right of course, if your approach is to always "fly in the present". If you like to take a trip down memory lane and want to relive that flight you where on as a wee little lad, you might want to "fly back then", if you catch my drift. I mean, there is the option in MSFS to adjust time backwards.
Therefore it would be nice, if the option was there to use different "past" approaches and landing aids, like ILS and such. Those who are firmly rooted in the present may happily ignore those, while the memory lane pilots can still use them freely.
Does that make sense? That way everybody wins and nobody is missing out.