I think (equity) options are much worse than equities for blowing inexperienced people out quickly.
The reason is leverage, combined with many individuals' perception that options offer some sort of "magic", especially when using complex strategies as advocated by books, seminars, etc.
The high commissions/high spreads (AKA slippage, as mentioned above) don't help things. Combined with the "complex strategies" that require the use of 4 (or more?) options contracts, it only gets worse.
Finally, the following paragraph is purely opinion on my part: I think peoples' perception is that they can somehow outsmart the relatively simple and flawed (yet very effective) Black-Scholes model, which, albeit very imperfect, is actually a lot better a predictor of prices than those perceived prices that come out of the "models" in peoples' heads 95% of the time. The other 5% are largely scenarios in which there is a massive, fundamental event (e.g., bankruptcy) coming for a company that someone guesses at better than does the market. In such cases, options can be very effective, but again it seems to me to be a minority of the time.