I had a Spectrum 48+, then having witnessed a C64 in action I'm afraid to say I utterly jumped ship, ditched the Speccy and saved up my pocket money, etc, and got a 2nd hand C64 for about £80 off a school mate.
Missed out on Amiga and ST although played both extensively, but soon after then I'd switched to consoles, primarily the Gameboy and Snes and it stayed that way till I got  a PC around 1999 that was a 800mhz AMD with a voodoo 2. Still kept consoles though, with the N64 and Dreamcast getting most of my time. 
Then got a second PC around 2004 (3.6g P4 with intergrated graphics, added a 9800 pro later and played a lot of WoW and HL2 on it before the 9800 pro  burnt out and I primarily went back to console gaming again. 
However, that PC still works and was my main rig till 2010 when I built my current rig and got back into PC gaming again after years of consoles. So I started with a gaming PC (definitely fair to call the Spectrum that IMO) and I'm back again full circle.
Though unfortunately I am in agreement with the fact that a lot classic old games are just pure rubbish by today's standards - I love old school, but the simple fact is even a derided series like COD would have made every single game from the 80's instantly and entirely obsolete. 
My favourite Spectrum game was Jet Set Willy, which by modern standards is a frustrating yet utterly mundane platformer with atrocious graphics, terrible sound and clunky gameplay. To consider that Super Mario Bros was only a couple of years after it. Now that game is still utterly brilliant to this day.
Of course there will always be games like Tetris that will defy technological advances - the classic Gameboy version of it is still one of the greatest games of all time, but many, many classic games from back in the day have aged terribly and are best left to the memories.
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