If you have reservations, then you should look at both sides if possible before making your decision.
Look over all the news the optimistic people have put forth, then look at the what the pessimists have to say about it, then decide based on that on whether to hold long, or jump in and out to make short gains, or just walk away.
You're welcome to look over my posts here for the pessimistic side.
I make no bones about, but I try to do as much research as I can when I present my opinion.
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