i much rather play 1.b4. its much more flexible in pawn structure and you almost always get a nagging space advantage on black's queenside. They are also more tricks than with 1.f4 which is more of an equalizing move with a specific flair.
i also play 1.b3 and sometimes, i get to transpose to 1..f4 lines, but i only do so sparingly since im never entirely comfortable with the structure. i always feel the queen knight struggles to find an adequate square, and there is always this nagging d5-d4 threat through half of the middlegame. Even the exciting attacking lines with bd3 , black is just better provided he knows how to avoid the early attack.
If you had to pick ONE b4 or f4 !?
I would prefer 1.f4 since it controls a center square, and it can transpose into very respectable openings. The reply 1...e5 is not a worry if you know From's Gambit theory.
#f4forlife
Only 11 Bird games on chess.com.
Well:#f4forlife...???????
Rip, exposed
Or Kings Gambit theory.
True, but this raises the question of whether it is safer for white to respond to 1.f4 e5 with 2.fxe5 (From's Gambit Accepted) or 2.e4 (the King's Gambit by transposition). I played the King's Gambit early in my chess career, and often got into trouble. Later I played Bird's opening for a while, but did not do too well with that either, often struggling for equality. Although 1.f4 has some surprise value against lower-rated opponents, it seems to throw away white's opening advantage.
With all that said, on the rare occasion that I still play 1.f4, I would rather respond to 1...e5 with 2.fxe5. I don't like offering gambits, and I hear that the best way to try to refute a gambit is to accept it.

I don't understand how white is able to mate black quickly in such a drawish pawn structure tho