Parental love- need to be more vocal. Why?

I commute from office to home with one of my friends. She and me have a lot in common and hence end up discussing many things. We discuss, share, debate and almost everyday our drive back to home becomes a mini 'journey' in itself.

One such day we were discussing about how our parents showed their love towards us and what has changed now. We realised that our parents were never too vocal about their affection for us. It was not necessary for a parent to tell the kid that he/she loved him a lot. It was understood. But now, be it doctors or teachers, advice parents to express their love every now and then. What happened? What has changed?
Still half way, we started discussing on what all could be the possible reasons. We realised that one reason is, parents these days are away from  home for almost 12 hrs in a day. Once back home, both of them are too tired to take the kid out for a walk or to the garden to play. Our parents made sure that they spent quality time with us.
Next, most of the day, the kid is either at a  day care or with a home maid. So the kid's connect is more with the maid or with the teacher in day care. Here comes the need for the parents to 'establish' a relation with their own child. Weird! Where are we heading to??
One more interesting observation we had was about weekends. For our parents, Saturdays and Sundays was a common phenomenon. The day to complete the pending household work , to meet some relatives, eat lunch and dinner with the family. Sunday evening was meant for homework completion of the kid. But now, weekends for parents means time for themselves first. Time to get on FB and uploading pics. Time to sleep a lot and eat dinner out.
These were just some points which is creating a huge gap in the relation. Again, no parent is at fault. It's just that the situation is like that. And with this,comes the need to be more expressive.

Probably its time to think on how to strengthen this bond naturally. Probably its time to Thank our parents , for whom parenting came naturally. Probably  its time for us to be more vocal towards the last generation and the next generation!