Canonical announced that removed support for 32-bit in Ubuntu, leaving your distribution with only 64-bit support. But given the problems that it could bring for gaming and the criticism it has received, it has now backed down and will remove support for 32-bit. Already from the Wine project they announced that there could be serious problems when withdrawing support for 32-bit software when trying to run certain software, and it seems that they have reconsidered ...
Ubuntu 19.10 will have 32-bit supportCanonical does not want to compromise your system for this decision. Had it done so, it would have turned against a large part of the users and also the developers. And this would affect other Ubuntu derived distros as well. They themselves have been in charge of communicating it: «Thanks to the huge amount of feedback this weekend from gamers, and Ubuntu Studio and Wine communities, we will change our plan and build Ubuntu 19.10 and 20.04 LTS with 32-bit i386 packages.«.
So for the moment, that will not happen in the near future. This gives you more time for all that software that still depends on 32-bit to be eliminated, replaced or some other solution is found. We have already seen how other projects make the decision to abandon 32-bit, such as the Linux kernel, as Linus Torvalds announced in 2012. But the packages is something different and there are still some pitfalls to overcome before removing it completely ...
El 32-bit software is usually not higher than 1%, but some projects like Wine, Steam, etc., depend on certain 32-bit packages or libraries that if removed will become unusable. It is not pleasant to keep packages out of date, but neither is it that others stop working. So I consider this decision to be partly correct. But personally, I'm not a fan of keeping old "stuff" ... For example, the x86 ISA has put a lot of emphasis on backward compatibility and now it's a bunch of over 1300 instructions, many of them absurd and useless. And something similar can happen in the software ...