Of course, attitudes towards Heathrow are purely subjective and dependent upon status. As a BAEC Gold, I have never found the fast track security that arduous and I have lounge access. On the train, I would not have lounge access as on an advance first ticket with most TOCs now they don’t allow lounge access and I am not paying the ridiculous full 1st fares. And I am not particularly wanting to sit in standard class for 4 hours.
Each to their own.