Ask away! My partner had great success using a series of Burley trailers which she rode into the ground through sheer mileage. She's now on her third and hopefully final one. These she used in combination with a kiddy-back tandem, so that, one by one each of her four kids moved from the trailer to the tandem and then to their own bike. You've another 18/24 months until your eldest child is too big to take by trailer regularly. Another possible solution is the use of one of the many 'Bakfiets' (box bike) cargo bikes on the market (though expensive to buy they do retain their value) or perhaps something like this: It's a confusing area, compounded by the fact that there aren't many of these things on the road so we aren't (as a nation) very familiar with what's available - and then we have to imagine how variant might fit into our lives. It's no wonder that people give up and resort to their cars. One of the hurdles you might face is simply getting your hands on a bicycle trailer which can convert into a buggy. We tried to source one in the summer and were told by the supplier that - due to a recent change in the law, they'd had to remove their trailers from sale. The reason he gave was that buggies (and therefore anything which converts into a buggy) must comply with EC interior furnishing fire retardant legislation. Now I've never heard of a bicycle trailer bursting into flames, but I can imagine a buggy, if left to close to a source of heat, might pose a serious risk to a child. So, for a while there you couldn't buy a buggy/trailer convertible, though the situation might have changed in recent months.