I've come to the conclusion that timing the market doesn't make sense to me when I'm buying to "hold", it only took me a year to learn this with my heart and not just brain >.>
Namely, if I put in $10,000 to invest, whether it is $15,000 or $5,000 tomorrow because of market changes, it doesn't matter to me. Why? Because no matter what the account says it is worth, ALL of it is unrealized gains and losses. Meaning that until I sell the investments, my $10,000 that I put in is essentially worth $0 because I'm not able to use it. And since I get to choose when to sell it, I just have to wait until it is worth more than I put in and at that time I'll be fine. So if you are not planning on needing the money soon, so what if market corrects/drops in the next month(s)? Just wait for it to go back up and you'll be set and have more than you put in.
The waiting until it is worth more than I put in is what I see as the problem people have. Some don't expect the market to do better than other investments, or that it won't go back up in the future when they need it. But I can't see the market NOT being higher than today after 10 years. If anything, it could be flat and I wouldn't make anything and would lose to inflation, in which case it was same as if I placed the money in the bank where it gained nothing as well. Or I could have bought a rental but that may or may not have done any better either.