Options "strategies" (eg iron condor) are not out-of-the-box trading strategies. Employing any options strategy repeatedly "for no reason" will be a loser over the long term, provided the options are priced efficiently by market makers (which is virtually all the time). If I just constantly trade options strategy x on some underlying for no particular reason but just because I like strategy x then my long term expected return is negative and I will wipe out my account (unless I just happen to be very lucky).
Options strategies are a way of expressing a pre-existing belief about the underlying, whether that's the future direction of its price or of its volatility, etc. It is with the pre-existing belief that you need to have an edge and then you can choose the best options strategy (or other implementation) with which to express it.
There's a caveat here. If you constantly write ATM put options on SPX, for example, that is a profitable strategy over the long term just by itself. However, it is a profitable strategy because buying and holding the S&P 500 is profitable over the long term, not because there's anything intrinsically profitable about writing puts on any random equity.
That said, if you decide to express the belief that over the long term the stock market will generally rise by writing ATM puts, you need to make sure you use appropriate money management because there will be some awful drawdowns and I suspect many people would be over-leveraged and wipe out their account. Personally, I would cover the entire risk with cash; ie if I had $x I wanted to put into this trade, I would choose the number of options such that if SPX went to zero I would lose $x and no more. ...I wouldn't actually do exactly that, but I'm getting off topic now...
