I don't think anyone said you were stupid for shooting digital, although many people are stupid enough to believe as gospel the marketing hype they see in the big photo magazines, that you must get rid of that decrepit ancient 18 month old 12MP digital camera for the new 14MP digital camera, even though you never print anything larger then a 4"x6" print or a 800x600 pixel JPEG online. Of course this new camera has only drivers for the absolute latest version of Windows, so you need to replace your computer and all of the software too..... Of course now that you have spent $4000 on a new digital imaging system, you complain about the cost of film at $10/roll (including processing). Oops I forgot something, you spent that $4000 on your credit card at 20% per annum interest computed daily, so better make that at least $4,.500 by the time you get it all paid for.
Of course at $10/roll one would need to shoot 450 rolls in 18 months to spend the same amount. That's around a roll every day and a half, few non-professionals would shoot that much. in 35mm at least.
Many professionals shoot digital where time is money, and the time is more important then the cost of equipment which can be written off anyway.....Some though have found that the time spent on the computer is more expensive then the cost of film and processing, so they moved back to shooting film.