Fatherly love, motherly love, friendly love, brotherly/sisterly love, love for god, love for patria...

Why do we divide Love into so many sub-love? Don't we misinterpret Love with a :
1. pure addiction to something (e.g. dreaming) - I adore dreaming...I feel so relaxed
2. feeling of obligation (e.g. parents) - they have brought me up...I must care of them
3. enchantment and desire (e.g. boyfriend/girlfriend) - you body is so perfect...it turns me on
4. ...

What, is there one Love or several of them? Any suggestions?