I don't think it is wrong between the two because even if you can do both then of course it will be better because you will still benefit from trading when the market is bearish and when the market is bullish then trading and also investment will reap greater profits.
That must be a good point to notice but if you not want to face bearish market conditions with your investments then you must follow strict stop-loss practices so that you will exit all your investments when market enters into bearish conditions. This is possible if you are able to predict market trends more accurately or with the help of "trailing stop-loss" kind of strategies.
But, this way investing also becoming similar to trading but if you look for long term goals then you can ignore small fluctuations of market conditions and exit only for major bearish market conditions.