What evolutionary pressures would lead to solitary hominids?

Solitary humanoids aren't uncommon in works of fantasy/cryptozoology with Bigfoot coming to mind. What I want to know is What evolutionary pressures would lead to solitary humanoids? Some characteristics of my solitary humanoids include:

• being 7 feet tall
• have human-level intelligence
• are mostly solitary similar to orangutans
• are mostly bipedal but can run on all fours while running
• are omnivorous
• are diurnal
• Are mostly covered in a thick, coarse fur. Like that of wolverines
• are 3 times stronger than humans
• have sharp claws (optional)
• have a stronger sense of hearing and smell
• have proportionately longer arms
• can interbreed with humans but the resulting offspring are always infertile similar to mules (optional)

posted over 4 years ago

icewar1908‭

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