Around August 1st many mainstream and crypto journalists were saying that Bitcoin will split in two and that its value will be divided between two chains. However, it turned out that it's not how it works, because investors usually don't sell BTC to buy a new fork - they do it with their BTC so it didn't cause any direct damage to Bitcoin's price. It's also not true that forks drive new investors away from Bitcoin - forks are altcoins so they compete with other altcoins. So, on economical level forks on their own don't posses any major threat. On a technical level, Bitcoin protocol was designed to withstand any attacks, so if you are running a full node any fork is just invalid chain and can't harm you. There may be some problems if you run online or SPV wallets, but they are not part of Bitcoin's original design,  so users should use them at their own risk.