I think no. Bitcoin is the best, why bother exchanging it to a lower one ? I'm not saying that ethereum or eth is bad, my point is bitcoin is way better than eth. There's much of a difference between these two. Here at my place, most of the cryptocurrency earners exchange their eth to bitcoin because it much convenient here to transact with bitcoin. But the choice is still yours. If you have different perspective then you must consider that, if that's what you think is right. Decide wisely.
The BTC might fork into two further coins, that might damage investor confidence.