If you look the good crypto to hodl for 5+ years, so, yes is still a good time to buy, but if you are thinking in short time, 1-3 months, I think you should think more about it.
Top-performing cryptocurrency is very suitable for the long term investment which you will hold for a couple of years. I'm now planning to hold my bitcoin for years because it can be profitable in the next coming years. That's right, it still good to buy as long as you are not afraid to lose money and you are willing to risk your money for better profits. And, probably if you're going to do a short term investment, try to focus on other well-known altcoins in the market because they are somehow suited for that kind of investment. But if you're going to go with bitcoin, you should choose the long term investment.
Yes, it is worth investing now, but personally I believe that we should invest only in top coins, because there is much less risk of losing our money than in little-known coins.
Same thought here mate, it somehow less risky if we are going with top coins unlike if we are going with the new projects/coins which is uncertain. Always prioritize the cryptocurrencies that you know will bring you profits. And at this moment, it seems that many people are now buying bitcoin which is somehow good because there's a chance that the price will rapidly increase after the halving. So, it's a perfect time to buy bitcoin.