it`s normal to have doubts on bitcoin. I want to address the part you mentioned media bad rep, child porn, gambling etc... bitcoin hasn`t created that part of society it exist before bitcoin and people did that before bitcrane. Don`t think that the fact people link BTC with those ... will destroy it.
One think remains scary about bitcoin (speaking for myself), the price is too speculative, you can get over night as well as loose what all you BTC investment. I believe bitcoin will keep getting more popular till it price changes dramatically, then people will start re-thinking their opinions of BTC.