Should older FIRE-ees stop preaching to a younger generation who cannot take this path?
young
Compound interest increase your fortune spectacularly if you give it enough time. So start. Start saving and investing right now.
Would you rather have been born in the 1950s to a stable society and The Beatles, or in the 1970s, to the Internet and Al-qeada?
The difference that spending £100 a month less on clothes in your twenties and investing it will make to your future is incredible.