What's your least favourite type of exercise? For me it's exercises in isolation. You know why? I'll tell you - because I'm lazy! I'd much rather do compound exercise that can hit multiple muscle groups at once than spend my time doing bicep curls.
Compound exercises are more functional as well. I can envision situations where I would need to pull myself up a ledge (pull ups) or lift something really heavy from the ground (deadlift and squats). I cannot picture a situation where I need to lift something in a single plane of motion that mimics a bicep curl, unless I'm eating a super heavy chocolate bar.
Sure isolations have their role. Body builders, for example, will use isolation to tone particular areas. I've just never been much into the bodybuilding scene. To me, exercise serves to make you more able in daily life. That's why I like compound exercises, they're multi-joint, functional, and challenging. I personal find them more enjoyable than isolations as well.
What are your thoughts? Please let me know in the comments.