Dribbling is a turn-off, and this holds true when it's coming from your shower head. If your home's water pressure is fine, just purchasing a new shower head may be enough to transform your shower's feeble dribble into a powerstream of cleansing water.
A quick trip to the store will reveal that shower heads can be relatively inexpensive, though fancy models sporting massage and spray control options will cost more. Plus, shower heads are quick to install, so that in an hour or less you could be immersed in the drenching torrent, singing arias to the thundering spray.