The reason why many people feels the price of bitcoin is too high to invest is because they want to make quick profit and they are never ready to hodl. if high price is a problem to you what stopped you to invest when bitcoin was at the low?. If you really want to invest bitcoin and to hodl, and not having plans to make profit quick price will never be problem, you can invest at all time knowing with hodling you can get a better profit.
Even if you want to make quick profit, how much can you invest so soon to warrant a quick ROI? It's just a short sighted mindset that makes it look like waiting to buy at a low price is the only way that you can easily place yourself at a good profit from your investment.
If you've been investing from the start of the year till now, which other asset class has the potential of giving you the returns you should have gotten by now even if you bought the asset at a time it was even bearish? No one that has done DCA from the start of the year till now is not in a very good profit, this is just a single year consideration, what hapens if you're able to invest for the long run? For a volatile asset as Bitcoin, you can't be too accurate when it comes to timing the market and while you're hoping that it's going to get more DIP, you will eventually find out that it's getting more bullish and that you've wasted a whole bunch of time that you should have used in investing earlier. Good Profitability is one of the ultimate reasons for investing in Bitcoin and to get the best out of it, its best to have a long term plan which allows you the opportunity of investing more and putting you in a good profit.