So figure out how to beat MFR. Do you even know the fuel consumption vs energy output of an mfr bioreactor over a boiler?
What's the most efficient use of your fuel? Are boilers worth it? Would force engines throttled by milk be better? You have nothing but options. Explore them
A force engine throttled by milk produces 300,000 MJ per biofuel while a steam boiler produces 145,000 to 180,000 MJ per biofuel depending on how well you stagger the fuel. However, the Steam Boiler has the advantage of being able to produce both MJs and EUs, and of being more compact, and of producing something that can be sent through a tesseract with no loss.
You can't beat MFR. It's the best simply because Biofuel is the most potent renewable fuel source, and MFR has the best way to produce it. Even if there's a better option than boilers that still won't change MFR vs Forestry.
Edit mod -> click "minefactoryreloaded" -> click disable -> You now only have fermenters/stills as a biofuel option -> Enjoy your "challenge"
I can't. I'm playing on a public server with friends.
Though it makes no sense. You say you get enjoyment out of finding and using the most efficient method; isn't that what MFR gave you? I think you're lying to yourself about being so immature you can't force yourself to ignore something if it's better. You likely enjoy the challenge of creating a working machine composed of many steps of processing and many different machines to go though. Accept that and move on.
If I wanted everything handed to me I'd be playing Equivalent Exchange 2. The challenge is the game.
If I just wanted to create convoluted Rube Goldberg Machines that require hundreds of machines and thousands of MJs to turn a Nether Portal on or off I'd do that. But I don't enjoy that.
MFR has literally zero reason to be balanced against Forestry; period.
It adapts mechanics from an another already established mod. It should therefore be balanced against those existing mechanics.