Laptop and productivity

I wonder why my company never gives a lower rank employee such as me a laptop. At times when I am at home, work came into my mind and I might just get an idea to solve something. I am sure there are some other people who feel so. But then again, perhaps not having a laptop also gives me more non working life. Should be a good point I guess :P

Just that I am quite amazed by the gamble that many western companies take in allowing their employees to work from home. Depending on the willingness of the employee, such a step should increase the productivity.