Lifting may be boring, but it's not time consuming. If you want to build muscle, you want to stick to high weight/low reps anyway. The benefits weight lifting gives you is enormous and extends well beyond just building muscle.
If you want to build _strength_ you'll do high weight/low reps. If you want primarily size, you need to have the volume (about 8 reps pre set for most exercises, and 3-5 sets), which could be pretty time consuming.
