Under 64 bit architecture, no easy way to add a 32-bit archive to synaptic or apt

I recently switched to a 64 bit environment, hoping to use at most my box. However, I recently found out that under 64 bit architecture, there is no way to easily add a 32-bit only repository or, for that, to install a 32-bit package graphically. It must be done from the command line, using the dreaded

sudo dpkg -i -f *package*

I understand that installing core libraries compiled for another architecture could be dangerous and lead to system breakage. However, this limitation impairs me greatly; in my user case, I am no more able to install packages from the BioLinux 32 bit repository. I should download them manually, check all dependencies, and then install them all from the command line. This drags me so much I am switching back to 32-bit.

I hope this gets solved soon - it's a shame we users with 64-bit CPUs are forced to use 32-bit systems just to be sure to be able to install everything we need.

Regards