In message
, MIG
writes

Because you still need to have the pushchair in your other hand,
unless you throw it away on the misguided assumption that a two-year-
old's desire to get out of it at one moment means that they are
prepared to walk as many miles as you have to go.

My point was that pushchairs were not used once a child could toddle
reasonably well - I can't ever remember people dragging a pushchair
along just in case.

You don't walk miles with children that young, whether in a pushchair or
not. You sit them on your lap, or on a seat if one is available, when
using public transport. If necessary, you carry them over hazards, but
otherwise you encourage them to use their own muscles. If you don't cart
the pushchair around all the time, there is no other option for the
child.

--
Paul Terry