BNB have future as long as binance still exists, but its indeed better to invest in bitcoin because bitcoin known to grow from year to year.
the only thing that will hold you from investing in bitcoin is probably the fact that $800 is not significant amount to invest, more likely have little profit even if bitcoin rise 20%.
Yes, but if someone continues to add BNB to their portfolio, it's best to continue and add Bitcoin to their portfolio. However, BNB is still an altcoin with great potential today. If a bull market occurs, I am quite sure that one of the altcoins that will rise highly is BNB. However, if you are still not sure about that, then converting all the BNB you have into bitcoin is also no problem. However, personally, I would probably still hold it.