I already won a free bet of $25 before which is very good since a 2x odds can give you the $25 back for free and without any risk. And this is not hard to happen since it's a free bet anyways you can just try your luck on a game that you know you have good chances but it's still not 100%.
I think I agree with that. Some people choose crazy odds, but I prefer a safe bet when it comes to free bets. And if I win, I use my funds for crazy things (in my opinion, multi-odds with x10 are crazy). Although, I once won 9 out of 10 in an accumulator with odds of 2000.
I still remember the final matchup being Arsène vs. Tottenham (I needed a Tottenham win). But I think I played it safe and also bet on Arsenal.
Although these are usually relatively small amounts, the human psyche still approaches free bets differently than withdrawable money.
I believe that most players see free bets as a great chance for slightly riskier bets and, as you say, crazy odds. High risk without real risk for player funds.