I often use the tool that is closest to another tool I am using. The closeness may be due to a common heritage, both technical and cultural. A common thread between the two is often high quality, maturity, cross-fertilization, long-term commitment, etc.
Now when it comes to Tcl, I use it for the above reasons because it is so convenient for writing scripts to use SQLite. In other words, it is my go-to wrapper for many SQLite applications. This is mainly related to (rapid) prototyping use cases.
> The SQLite library is designed to be very easy to use from a Tcl or Tcl/Tk script. SQLite began as a Tcl extension and the primary test suite for SQLite is written in TCL. SQLite can be used with any programming language, but its connections to TCL run deep.
If there's any better relational database API, in any language, than SQLite's Tcl interface, I've not seen it yet. (And the reasons SQLite's Tcl interface is so good would either be hard to replicate without Tcl, hard to replicate without SQLite, or both.)
Now when it comes to Tcl, I use it for the above reasons because it is so convenient for writing scripts to use SQLite. In other words, it is my go-to wrapper for many SQLite applications. This is mainly related to (rapid) prototyping use cases.
From https://sqlite.org/tclsqlite.html :
> The SQLite library is designed to be very easy to use from a Tcl or Tcl/Tk script. SQLite began as a Tcl extension and the primary test suite for SQLite is written in TCL. SQLite can be used with any programming language, but its connections to TCL run deep.