String concatenation can be a bit of a frustrating process, but it's doable. You can keep adding "needs" to this to make it unmanageable, but the ability to point to a range of cells and say "concatenate all these text strings into a single cell"...that's not that hard to ADD INTO your spreadsheet.
I have several User Defined Functions (UDFs) that can be added to your sheet to give you the new function. The simplest I use is called ConCatRange() and it doesn't take any parameters other than the range of cells you want to join.
How to install the UDF:
1. Open up your workbook
2. Get into VB Editor (Press Alt+F11)
3. Insert a new module (Insert > Module)
4. Copy and Paste in your code (given above)
5. Get out of VBA (Press Alt+Q)
6. Save your sheet
The UDF is installed and ready to use.
It's used in your sheet, for example, like this: