You will not just get "moans" - I predict you are absolutely wrong. Totally wrong. And I write this with regret.
Interest in steam has sunk dramatically with the end of steam traction on BR, and will sink further.
But you, I - we - have to define what you mean by 'interest' of course. Will lots of crowds turn up to "Thomas Days" on heritage railways? Yes, I hope they will, at least for a few more decades, and, with luck, for more. A child will always be fascinated by the 'chuff-chuff' of the steam locomotive. It's an example of power relatively easily understood - to a point.
But this is only superficial 'interest' in steam. It is nothing like experiencing, on an emotional basis, the day-to-day thrill of seeing and hearing pacifics (or 4-6-0s if you were on a poor benighted railway with copper capped chimneys substituing for proper express locomotives

) roaring through your local station at 75-80 mph.
IT is nothing like watching the 2-6-2T (or 0-4-2T if on aforesaid benighted copper-capped railway) on the push-pull chuffing out of the bay platforms with a one-coach train on the local branch.
I realised this long, long ago - indeed, when main line steam was still the norm on some lines. In October 1964, we had the last A4 special on the ECML to Kings Cross. I remember asking my dad to take us over to see this, and, even though I was only 12 myself, I wanted a young lad, a year younger than me, to see this with his own eyes, because his interest in trains was new, and he'd never seen the ECML as I had, just three years earlier, with majority steam traction.
So, over we went, and on time, 60009 stormed through. I remember seeing the light from the firebox door in the cab, and brief shadows of the crew. And I knew a chapter of my life had been closed. I would never, ever see the same again. The lad (I forget his name now) was interested, but I could tell, it just didn't mean anything like the same to him as it did to me. He couldn't go back to memories because he had none. He had nothing like the emotional attachment to this than I had. OF course not, why should he?
I suppose it's like the Hurricane or Spitfire pilot watching students in 1950, or better still, in 1970, complaining or protesting against whatever. He'll be thinking: "My God, did I fly myself into life or death situations hour after hour, day after day for this? So you knobs like you can protest over <insignificant complaint vs Nazi occupation>?"
And to answer the OP - alas, not.
I bunked Reading shed for the first time around Easter, 1962. There were (I've lost my log book) from memory about 70 locos on shed - Castles, Halls, lots of 61xx, 43xx and 57xx and probably 28xx (but no Kings, no Counties and I don't think even a Grange or Manor). But there was a Schools on Reading Southern. (30911, Dover) - that's my hardest concrete memory of that Sunday morning!
For you, Lady Margaret Hall - or whatever you have - has a deep, emotional attachment: you lived with it - her, you smelled it - her, you kicked, slipped, hurt your head. burnt your hand on the firebox door, or whatever on it - her. This was not at a staged heritage event - this was your day-to-day experience: your life, and your livelihood.
Simon, or Tricia, or Tristran, born in 2015 and raised with the internet and mobile phone and ... all the rest - for them, it will never, it can never, be the same.
Even if some, 0.01% become hardenend enthusiasts, it can never be the same.